Description: Sam Cook (Sheridan Smith) works as a cleaner at a London financial firm where she overhears a conversation about insider trading. With the help of her friend Jess (Jade Anouka), she takes advantage of the information to pay off her gambling debts in this British drama written by Mark Marlow. [Premiered originally in the UK on ITV on 9 January 2019 and in the US on Sundance Now on 31 Dec 2020]