Studying serious crimes from a mathematical perspective, this brainiac FBI drama sees sums whiz Charlie providing his Special Agent brother Don with the answers that the cops could never work out on their own. Whether it's a mystifying murder, confusing kidnapping or perplexing terror plot, you can rely on these two to do the maths.


  • Season 6 - Episode 2: Friendly Fire

    The team investigates a shootout at a bank - but the statements of the agents involved do not match Charlie's theory about what happened...

  • Season 6 - Episode 1: Hangman

    New series. The agents are called in to protect an activist during a political rally. The case is complicated when a sniper targets the campaigner.

  • Season 5 - Episode 23: Angels And Devils

    Amita is abducted by the leader of a cult, so the whole team, including Don and Charlie, team up with Ian Edgerton to try and get her home safely.

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