The Rainmaker TV series is on ITV1 at 9pm, with John Slattery fronting a glossy legal drama built around Rudy and Sarah’s fight at Tinley Britt. It arrives with a US track record already on the board, which makes this more than a routine network slot.
John Slattery and Leo
John Slattery plays Leo, Rudy and Sarah’s smarmy boss, and the setup gives the series its clearest business edge: a legal fight built around hierarchy, not just courtroom noise. The show is also set in Charleston and based on John Grisham’s novel, a combination that leans into the kind of polished legal storytelling British viewers already know how to sample quickly.
Milo Callaghan plays Rudy, one half of the ambitious young couple at Tinley Britt, while Madison Iseman plays Sarah. That pairing matters because the series is not built around a lone hero; it is built around two young associates trying to move inside an established firm, with the show’s momentum coming from who controls the case and who controls the room.
US hit last year
The Rainmaker was already a hit in the US last year, which gives ITV1 a ready-made draw rather than a cold launch. For viewers, that means the episode on at 9pm is being positioned as a current TV pick with a built-in reputation, not a gamble on an unknown title.
The legal drama label also sets expectations. This is not being sold as a broad ensemble caper or a lightweight procedural; it is a glossy adaptation of John Grisham’s novel, and that narrows the pitch to viewers who want the law firm power game, the personal rivalries, and the pressure that comes from ambitious juniors trying to outplay their own bosses.
Leo leaves Tinley Britt
Leo is fired after a run-in with John Slattery’s character, then takes a job at a less refined firm. That turn gives the series its sharpest complication: the boss Rudy and Sarah answer to does not stay securely on top, and the story shifts the power map rather than leaving it in place.
What exactly happened in that run-in is the open question, and it is the one worth watching for when the series runs on. If The Rainmaker is going to keep its edge on ITV1, it will be through those office fractures — the kind that turn a glossy legal drama into a fight over status, loyalty, and who gets to keep the best seat in the room.
