Katie Cassidy and Carlos Valdes in The Flash (2014)

Paul Blackthorne, Jesse L. Martin, Katie Cassidy, and Carlos Valdes in The Flash (2014)

Katie Cassidy and Stephen Amell in Arrow (2012)

Paul Blackthorne and Katie Cassidy in Arrow (2012)

Paul Blackthorne, Willa Holland, and Katie Cassidy in Arrow (2012)

Michael Emerson, David Nykl, David Ramsey, and Katie Cassidy in Arrow (2012)

Paul Blackthorne, Michael Emerson, David Nykl, David Ramsey, Katie Cassidy, and Juliana Harkavy in Arrow (2012)

Patrick John Flueger and Katie Cassidy in You Are Here (2007)

Harry Hamlin, Victor Webster, Claudette Mink, Jim Beaver, Richard Burgi, Elaine Cassidy, Dean Chekvala, Beverley Elliott, Chris Gauthier, Christopher Gorham, David James Lewis, Cameron Richardson, C.J. Thomason, Adam Campbell, Ben Cotton, Matt Barr, Sarah Smyth, Gina Holden, Katie Cassidy, Sean Rogerson, Brandon Jay McLaren, Cassandra Sawtell, Ali Liebert, Amber Borycki, and Anna Mae Wills in Harper's Island (2009)