What drug is the dad taking in Cape Fear? It comes as eye drops — and it ties into Zack's worst night
Apple TV+'s Cape Fear ran across ten episodes from 5 June to 31 July 2026, created by Nick Antosca with Martin Scorsese and Steven Spielberg executive producing. Two episodes in, viewers had noticed the same thing: Tom Bowden keeps sneaking a drop of something onto his tongue.
So what is he taking?
Liquid LSD. Patrick Wilson's Tom microdoses acid he keeps in a small vial — the sort of dropper bottle that passes for eye drops in a bathroom cabinet. He first does it on screen in episode 2, "Why Would I Want to Hurt You?", sitting beside his hospitalised son. The show frames it as stress management. It becomes a plot device by episode 6.
The night Zack loses a toe
The series opens with Anna (Amy Adams) and Tom coming home to find 16-year-old Zack (Joe Anders) bloodied, disoriented, and missing a toe he bit off himself. Hospital staff reach for the obvious explanation — the boy took something and had a bad trip — and Tom, who has a vial of hallucinogens in his pocket, doesn't argue very hard.
The doctors are wrong. Episode 7, "Mongrel", supplies the real answer: scopolamine, the motion-sickness drug nicknamed Devil's Breath, which Nevaeh had been dosing Zack with in quantities large enough to cause depersonalisation and, per his doctor, possible permanent psychosis. It's also how she and Max Cady convinced him that Cady is his father.
Then Zack finds his father's stash
Episode 6, "Possum", is where Tom's habit stops being a private detail. On a sweltering Savannah night with the air conditioning broken, all four Bowdens drink iced tea spiked with his acid. Anna, 17 years sober, gets the worst of it. Natalie shoots a surveillance drone out of the air. Tom debates whether the drone was real at all.
The culprit is Zack, who also sets a fire downstairs. When his parents confront him, he offers four words:
"You're not my family," Zack tells Anna in "Possum" (2026).
Tom then climbs into a passage behind his son's wardrobe, falls through the floor, and finds Nevaeh living inside the walls.
Does the scopolamine come back?
It does. In the finale, Cady breaks into the house during a storm, takes the family hostage in their own kitchen, and injects Zack with scopolamine to keep him docile through the mock trial he's staged. Same drug, same boy, third time.
Tom's eye-dropper, meanwhile, never gets him high on purpose after episode 6. It just hands his son a weapon.