Tom Amandes is joining the fourth season of The CW’s Arrow as Noah Kuttler, a/k/a The Calculator. This criminal mastermind and tech genius uses his skills and intelligence to blackmail Roy out of retirement, leading to a huge fight with Arrow and his team.

He’ll make his first appearance as the diabolical Calculator after the holidays on the February 3, 2016 episode “Unchained.”

Amandes is familiar with Arrow co-creator Greg Berlanti, having starred in the creator’s early 2000s show Everwood. He also worked on Berlanti’s Eli Stone and No Ordinary Family. Recently he has guest starred on Revenge and Chicago Fire. He also did long story arcs on Scandal and Parenthood.