Leather & Lark

Lark Montague is introduced as a vigilante who targets predators. After discovering Andrew’s infidelity and, more importantly, his predatory messages to underage girls, she stages a brutal fireworks execution and finishes him with a gunshot. Her crusade is rooted in trauma from Ashborne Collegiate Institute, where artistic director Laurent Verdon abused students and Lark’s best friend Sloane killed him. Lark’s guiding vow is that no one she loves should ever have to kill for her again.

Later, Lark lures another predator, Jamie Merrick, and forces his car into Scituate Reservoir. Injured and needing cleanup, she calls on her stepfather Damian Covaci’s clandestine resources. A masked Leviathan cleaner retrieves the body with help from Conor, but the cleaner berates Lark as reckless and locks her in his trunk to avoid witnesses. Lark escapes, leaving their encounter hostile and unfinished. That cleaner is Lachlan Kane, a hitman under the control of crime boss Leander Mayes. Lachlan wants out, but Leander refuses because Lachlan damaged business with Damian after the reservoir incident.

A year later, Lachlan attends the opening of his brother Rowan Kane’s restaurant, Butcher & Blackbird, where Rowan is celebrating with Sloane. Lachlan meets Lark, and their immediate attraction leads to a fierce kiss on the balcony. The moment collapses when they recognize each other from the reservoir job: Lark as the woman he trapped, Lachlan as her masked cleaner. They agree to be civil for Sloane and Rowan, but their resentment remains tangled with desire.

Meanwhile, a religiously obsessed stalker called the Phantom surveils Rowan and Sloane and fixates on Lark as a way to punish the group. Lark soon learns from Aunt Ethel Montague that her family suspects Lachlan and Leviathan in a series of murders occurring every forty days. Stan Tremblay, a family fixer, pushes Nina Montague and Damian to eliminate the Kanes preemptively. Ethel, sharp despite failing health, guides Lark toward a strategic solution: marry Lachlan, because Damian will respect sacred vows and hesitate to strike family.

At Rowan and Sloane’s seaside wedding, Lark proposes the bargain to Lachlan. He will investigate the murders threatening her family, and she will secure contracts that restore his value to Leander and allow his retirement. Their sudden courthouse marriage is both shield and performance, with Ethel publicly blessing the match by giving Lark her ring. The ruse strains Lark’s relationship with her family, especially when she later reveals she has legally become Lark Kane and claims Lachlan is retiring.

Forced proximity slowly changes them. Lachlan witnesses Lark’s severe claustrophobic panic in a stalled freight elevator and later hears her singing a repeated number sequence tied to trauma. He discovers her hidden trophies and learns she has killed ten men to protect others. Rather than turning away, he begins to understand the real Lark beneath her bright persona. He apologizes for the trunk incident, arranges a sleep retreat to help her insomnia, and helps her confront Dr. Louis Campbell, the Ashborne headmaster who ignored warnings about Verdon. Lark sews Campbell’s lips shut for silencing victims and executes him, while Lachlan cleans the scene and comforts her afterward.

The investigation points first toward Bob Foster and suspicious Club Pacifico payments, but the trail shifts. With Conor’s support, Lark and Lachlan infiltrate the club, photograph a $50,000 cash invoice, and hide together in a closet when nearly discovered. On a rooftop afterward, Lark tells Lachlan about the home invasion that killed her father, injured her mother, and created her claustrophobia. Their emotional trust deepens alongside their sexual relationship. At Lark’s KEX performance, she debuts Ruinous Love for Lachlan, signaling forgiveness, and they later consummate their relationship through negotiated power and consent.

When they broaden the search to insiders, Lark identifies Stan Tremblay as a possible key because he kept meticulous records. Leander’s system reveals Stan is already dead by homicide. Lark and Lachlan break into the medical examiner’s office and remove Stan’s fingers and an eye to access his vault. Conor decrypts evidence from Stan showing the killer used a leather tool from Lachlan’s shop, tying the threat to a client known as Abe Midus.

The Phantom then strikes directly. Posing as a hospital staffer, he murders Ethel with sedatives, claiming divine purpose and vengeance for his brother Harvey. Ethel dies defiant, warning him not to touch Lark. Soon after, Lark learns Ethel has died, calls Lachlan, and they confess their love. Before she can meet him, Abe breaks into her apartment, drugs her, and wounds Bentley, her protective dog. Lachlan realizes Lark is missing, finds Bentley alive, and uncovers Abe’s surveillance nest. Conor identifies Abe Midus as Abe Mead, Harvey Mead’s brother, motivated by revenge against Rowan and Sloane.

Abe traps Lark inside a rotary batch oven and forces Lachlan into an impossible choice: save Lark from the oven or stop a car bomb aimed at Rowan. Abe also threatens to frame Lachlan for the murders. Lark chooses for him, urging him to save Rowan. Rose helps Lachlan reach the controls, but the emergency stop has been sabotaged, so Lachlan shoots out the oven window and they force the door open. Lark survives, Rowan and Sloane escape the bomb, and Abe is killed during the rescue. In the aftermath, Rose discovers she has been quietly shot and fades as Fionn desperately searches for her, leaving her fate uncertain.

After the crisis, Lark completes the Covaci contract, enabling Lachlan’s retirement from Leander’s service. Lachlan gives Lark a hidden safe of curated trophies, including Dr. Campbell’s heart encased in resin, offering her a form of closure. He also gives her a real choice: divorce papers or a renewed future, alongside a honeymoon plan. Lark tears up the papers, accepts his proposal, and chooses their marriage freely. A later beach getaway reaffirms that choice, turning the torn divorce papers into a symbol of commitment rather than escape.