The Missing Half Summary: A Gripping Tale of Sisterly Secrets
Introduction
Two sisters vanish from the same Indiana town seven years apart, leaving behind abandoned cars and no answers.
The Missing Half by Ashley Flowers with Alex Kiester follows Nic Monroe, a woman drowning in grief and alcohol, as she confronts the disappearance of her older sister Kasey.
When Jenna Connor approaches her with a shocking claim about a hidden connection between their missing sisters, Nic is pulled back into a past she has fought to forget.
This book suits readers who enjoy psychological thrillers with slow-burn investigations, morally ambiguous narrators, and twist endings.
The dual timeline structure and small-town Indiana setting will appeal to fans of domestic noir and crime fiction.
Readers who dislike unreliable narrators or violence between women may not connect with this story.
Read Next:Â Mystic River by Dennis Lehane Summary: A Dark, Shattering Tale of Guilt and Fate
TL;DR: The Core Mystery
Nic Monroe’s sister Kasey disappeared seven years ago.
Now Jenna Connor claims her sister Jules vanished under identical circumstances. Together, they investigate Steve McLean, a predatory restaurant manager, and Brad Andrews, a family friend with secrets.
The investigation leads to a shocking discovery: Kasey is alive, living under an assumed name in Nashville.
But the final twist is darker still—Nic herself killed Jules in a drunk driving accident she suppressed, and Kasey staged her own disappearance to protect her.
The Missing Half Summary: A Story of Buried Truths
Spoilers ahead.
Nic Monroe works at Funland in Mishawaka, Indiana, while serving probation for a DWI. A strange woman named Jenna Connor confronts her in the parking lot. Jenna says her sister Jules disappeared just like Kasey did.
Nic initially rejects Jenna’s plea for help. But an AA meeting triggers a memory of Kasey acting paranoid before vanishing. Nic agrees to investigate with Jenna, and they discover that Rosie’s Records, where Kasey worked, shared a wall with Mesquite Barbecue, where Jules once worked.
They track down Lauren Perkins, Kasey’s old friend, who points to Steve McLean, a predatory manager with abuse allegations. But Detective Wyler dismisses McLean due to an alibi. Nic and Jenna confront McLean themselves, but he toys with them and reveals nothing useful.
Lauren is threatened by an unknown man at a playground. Nic suspects her boss, Brad Andrews, a family friend. She investigates Kasey’s old car and finds it logged 350 unexplained miles. Nic confronts Brad and his wife Sandy at their lake house.
Sandy admits Kasey had an affair with Brad and extorted $7,000 from her. Brad admits threatening Lauren but denies involvement in the disappearances.
Nic is arrested for driving with a suspended license. Jenna bails her out but then claims she is quitting the investigation.
Nic discovers Jenna lied about her mother’s cancer. She breaks into Jenna’s house and finds messages revealing Jules was raped by Steve McLean. Nic also finds a gun box. Jenna has gone to kill McLean.
Nic hides in Jenna’s truck and follows her to Nashville. Jenna knocks on a door, and Kasey answers—alive. Jenna accuses Kasey of killing Jules. When Jenna prepares to shoot, Nic kills Jenna with a hammer.
As they dispose of Jenna’s body, Kasey reveals the truth. Nic was driving drunk in 2012.
She hit Jules Connor and called Kasey for help.
Kasey hid the body and staged her own disappearance to protect Nic. The person Nic has been hunting for is herself.
The novel ends with Nic and Kasey sinking Jenna’s body into a swamp next to Jules’s resting place. Nic returns home to maintain normalcy, planning to run away and start over with Kasey.
You May Also Like:Â Getting Away with Murder by Shari Lapena Summary
Summary by Chapter
Spoilers included. This section breaks down all 46 chapters and the prologue for readers who want to understand how the dual mysteries unfold.
Prologue: A girl runs through a dense swamp at night, pursued by unseen figures. She trips, falls into the water, and hears a twig snap behind her, forcing her to flee into darkness.
Chapter One: Nic Monroe works at Funland when she notices a strange woman watching her. Later, the woman confronts Nic in the parking lot and asks to talk about Kasey.
Chapter Two: The stranger says her sister disappeared too. Nic flashes back to summer 2012 when she woke up hungover and found Kasey gone along with their shared car.
Chapter Three: Jenna Connor introduces herself and explains that Kasey and Jules are the “Missing Mishawaka Girls.” She claims to have Jules’s diary, but Nic demands to see it first.
Chapter Four: Nic recounts Kasey’s disappearance to Jenna. Kasey’s car was found abandoned with her purse, phone, and cash untouched. Jenna says Jules’s car was found the same way.
Chapter Five: Jenna admits there is no diary. She fabricated the story to force Nic to cooperate. Nic kicks her out in fury.
Chapter Six: Nic bonds with a cat named Banksy at the animal shelter. At an AA meeting, a woman’s story triggers a memory of Kasey acting terrified before her disappearance.
Chapter Seven: Nic remembers Kasey warning her not to go anywhere alone. She realizes Kasey’s fear was genuine, not just stress.
Chapter Eight: Nic studies Jenna’s timeline notes and discovers Famous Jake’s, where Jules worked, is now Mesquite Barbecue on Grape Road. She calls Jenna to apologize.
Chapter Nine: The women meet at Jenna’s house. Nic sees a massive research wall. They find Lauren Perkins, now Lauren Tate, on Facebook and message her.
Chapter Ten: Nic and Jenna confront Lauren at church. Lauren agrees to talk and reveals she left Rosie’s Records to work at Mesquite Barbecue for better tips.
Chapter Eleven: Lauren mentions her old boss Steve McLean, called Skeevy Steve. Brad Andrews reveals he overheard Nic leaving a voicemail for Detective Wyler.
Chapter Twelve: Detective Wyler dismisses Steve McLean as a suspect, citing his alibi. Nic accuses Wyler of ignoring a predator. They decide to find McLean themselves.
Chapter Thirteen: Nic and Jenna visit Mesquite Barbecue. Their waiter points out Steve McLean working at the bar. His eyes lock with Nic’s.
Chapter Fourteen: They wait in the truck and follow McLean. Nic reflects on how the media sensationalized Kasey and ignored Jules due to class bias.
Chapter Fifteen: They follow McLean to an Irish pub. He claims not to remember Jules but recognizes Kasey’s name. He calls Lauren an uptight “frenemy.”
Chapter Sixteen: McLean says he saw Kasey crying in the parking lot. Nic spits in his face. Jenna drags her out of the pub.
Chapter Seventeen: Nic and Jenna visit Lauren, who panics and orders them off her property. She says she has children and cannot risk more danger.
Chapter Eighteen: Nic realizes someone threatened Lauren. Jenna suspects Brad Andrews. They return to Lauren’s door, and Nic shouts that they know about Brad.
Chapter Nineteen: Lauren freezes and lets them inside. She reveals Kasey had an affair with Brad Andrews. Two days ago, a man threatened her daughter at a church potluck.
Chapter Twenty: Nic remembers Brad asking about Kasey in 2012. Jenna wants to report the affair to police. Nic hesitates because Brad has an alibi.
Chapter Twenty-One: Brad offers Nic a ride home and asks about the investigation. Nic lies about contacting Lauren. Brad reminds her his mind is a “steel trap.”
Chapter Twenty-Two: Nic searches Kasey’s old car in storage. She finds receipts and realizes the car logged 350 unexplained miles in Kasey’s final weeks.
Chapter Twenty-Three: Nic has dinner with her father. He reveals Brad canceled their 2012 fishing trip—his alibi for Jules’s disappearance is gone.
Chapter Twenty-Four: Nic finds a gas station receipt in Kasey’s jacket with an address to a bait shop near Brad’s lake house. Jenna fails to answer her calls.
Chapter Twenty-Five: Nic visits Jenna, who claims her mother’s cancer worsened. Jenna insists on stopping the investigation. Nic suspects she has been threatened.
Chapter Twenty-Six: Nic drives to Brad’s lake house despite her suspended license. She publicly accuses him in front of his family reunion guests.
Chapter Twenty-Seven: Sandy Andrews reveals she caught Kasey and Brad having sex. Kasey extorted her for $10,000. Sandy paid her $7,000 at the bait shop.
Chapter Twenty-Eight: Sandy hid the extortion from police. Brad admits threatening Lauren but denies threatening Jenna. Nic wonders who scared Jenna.
Chapter Twenty-Nine: Nic buys wine and gets pulled over. Officer Mercer discovers her license is suspended and an active warrant exists for her arrest.
Chapter Thirty: Nic is booked into jail. She calls Jenna, who agrees to bail her out. Nic realizes her life is completely broken.
Chapter Thirty-One: Jenna bails Nic out. She reveals a fantasy of Jules living happily in Thailand. Jenna says she is quitting the investigation to care for her mother.
Chapter Thirty-Two: Banksy the cat is adopted by another family. Detective Aimes reveals police found one of Jules’s hairs in Kasey’s car. Jenna already knew this.
Chapter Thirty-Three: Nic visits Jenna’s mother and discovers her cancer has been in remission for three weeks. Jenna lied about her mother dying.
Chapter Thirty-Four: Nic breaks into Jenna’s house through the unlocked back door. She plans to photograph the research wall and leave.
Chapter Thirty-Five: Nic finds the research wall stripped. She hacks into Jenna’s laptop and reads messages revealing Jules was raped by Steve McLean.
Chapter Thirty-Six: Nic finds a gun box in Jenna’s drawer and realizes Jenna plans to murder McLean. She hears Jenna’s truck pull into the driveway.
Chapter Thirty-Seven: Nic escapes through a window and hides in the truck bed under a tarp. Jenna drives away with Nic trapped inside.
Chapter Thirty-Eight: Jenna drives for hours to Nashville. She knocks on a garage apartment door. Kasey Monroe opens it, alive.
Chapter Thirty-Nine: Kasey is shocked to see Jenna. Jenna accuses Kasey of murdering Jules and tracking her down using the bumper sticker “We are not two, we are one.”
Chapter Forty: Jenna reveals she found Kasey’s car repair records. Kasey admits she hit Jules with her car and hid the body. Jenna pulls a gun.
Chapter Forty-One: Nic creeps up the stairs holding a hammer. Jenna prepares to shoot Kasey. Nic swings the hammer and kills Jenna.
Chapter Forty-Two: Jenna’s body crumples. Kasey checks her pulse and pronounces her dead. Nic vomits over the railing, horrified by what she has done.
Chapter Forty-Three: They load Jenna’s body into the truck and drive south. Kasey explains she staged the abduction to steer police away from a drunk driving investigation.
Chapter Forty-Four: Flashback to 2012. Nic called Kasey at 2:00 AM, claiming she hit a tree. Kasey found Jules dead and hid the body to protect Nic.
Chapter Forty-Five: Nic realizes she killed Jules Connor. She screams in guilt and self-loathing. Kasey comforts her as they drive to the swamp.
Chapter Forty-Six: They weigh Jenna’s body down with stones and sink her next to Jules. Kasey tells Nic to go home and act normal until they can run away together.
Read Also:Â Heart of Glass Summary: A Thriller of Secrets, Fame & Murder by Jennifer Hillier
Characters In This Book
| Character | Role |
|---|---|
| Nic Monroe | Narrator on probation for a DWI who discovers she killed Jules Connor in a forgotten hit-and-run. |
| Kasey Monroe | Nic’s older sister who staged her own disappearance to protect Nic from prison. |
| Jenna Connor | Jules’s older sister who obsessively investigates the disappearances and is killed by Nic. |
| Jules Connor | Jenna’s younger sister who was raped by Steve McLean and killed by Nic in a hit-and-run. |
| Brad Andrews | Nic’s boss who had an affair with Kasey and threatened Lauren to hide it. |
| Sandy Andrews | Brad’s wife who paid Kasey extortion money and lied to protect her family’s reputation. |
| Lauren Perkins | Kasey’s former coworker who knew about the affair and was threatened into silence. |
| Steve McLean | Predatory restaurant manager who raped Jules Connor. |
| Detective Wyler | Original detective who dismissed McLean as a suspect. |
| Mrs. Connor | Jenna and Jules’s mother who hid her cancer remission. |
Read Also: Explore summaries of Ashley Flowers’ debut novel to see recurring themes of small-town secrets and missing persons.
Beneath the Surface: The Novel’s Core Themes
| Theme | How the book presents it |
|---|---|
| Sacrificial Sisterhood | Kasey gives up her identity and future to protect Nic. Nic kills Jenna to save Kasey. Both acts show sisters committing extreme violence for each other. |
| The Burden of Secrets | Brad and Kasey’s affair destroys family friendships. Nic’s forgotten hit-and-run forces Kasey to fake her death, shattering their family and leaving Nic in self-destructive cycles. |
| Trauma and Self-Destructive Escape | Nic relies on alcoholism and blackouts to cope with Kasey’s disappearance. Her mother abandons the family. Her father retreats into denial. |
| Media Exploitation and Class Bias | The media sensationalizes Kasey as an “all-American” girl while ignoring Jules because she was a working-class bartender. Later, the media labels Kasey a “slut” and “sociopath.” |
| Abuse of Power and Grooming | Brad Andrews, a surrogate uncle, exploits his authority to have an affair with nineteen-year-old Kasey. Steve McLean abuses his managerial position to sexually assault employees. |
Books Like The Missing Half
All Good People Here by Ashley Flowers — The author’s debut novel shares a dark Midwestern setting, childhood disappearances, and morally complex female protagonists.
The Silent Patient by Alex Michaelides — A psychological thriller built on repressed trauma, hidden secrets, and a massive final reveal.
Sharp Objects by Gillian Flynn — A gritty mystery set in a decaying small town, examining toxic family relationships and female violence.
The Last Time I Lied by Riley Sager — A suspenseful thriller about past disappearances, memory manipulation, and guilt-ridden protagonists.
Gone Girl by Gillian Flynn — A domestic noir thriller with unreliable narrators, staged disappearances, and media manipulation themes.
Story Snapshot
| Element | Details |
|---|---|
| Genre & Subgenre | Psychological Thriller, Crime Fiction, Domestic Noir |
| Core Narrative Tropes | Staged disappearance, repressed trauma, sacrificial sisterhood, moral dilemmas |
| Tone & Atmosphere | Gritty, tense, claustrophobic, heavy with small-town stagnation |
| Primary Conflict | Nic’s search for truth about Kasey and Jules, which collides with her own repressed guilt |
| Pacing Style | Slow-burn investigative pacing with a rapid, high-stakes final act and double twist ending |
| ISBN-10 | 0593727002 |
| ISBN-13 | 978-0593727003 |
| Pages | 288 |
| Author Background | Ashley Flowers is the host of the Crime Junkie podcast and author of All Good People Here. Alex Kiester is a novelist and former editor. |
Continue Reading: All Good People Here Summary: A Small Town’s Dark Secrets
