Peter Wingfield

The season four premiere picks up where season three left off, with Helen Magnus (AMANDA TAPPING) standing on a cobblestone street, far from her own time or the modern Sanctuary resources. Having followed her longtime nemesis Adam Worth (IAN TRACEY) through a collapsing time vortex, she is stunned to realize they have both traveled back to London...1898. Worth is determined to change the course of his own history in order to save the life of his daughter -- even at the risk of destroying the entire future - and Magnus must track him down and stop him before he can make changes too large to remedy. Magnus' dear friend James Watson (PETER WINGFIELD), history's greatest detective and the inspiration for the fictional Sherlock Holmes, deduces the truth about her mission, and together they must find a way to stop Worth. But Victorian London contains unexpected pitfalls for modern-day Magnus, who's frustrated by the return to a time when so many doors were closed to her. Crossing paths with her own past self, and with her star-crossed lover John Druitt (CHRISTOPHER HEYERDAHL) -- otherwise known as Jack the Ripper -- Magnus is at constant risk of unintentionally altering the timeline. And with someone murdering women in Whitechapel again, a decade after the original Ripper killings, Magnus knows more than she wishes about both the future and the past. Also available on VUDU

In a look back to 1944 and World War II, Magnus (AMANDA TAPPING) has learned of a new weather controlling device developed by the Nazis and intended to be deployed against the approaching allied armada. On the eve of D-Day, Magnus, Watson (PETER WINGFIELD) and Griffin (VINCENT GALE) join forces with local underground French Resistance fighters who try to help the team infiltrate the Nazi bunker where the device's schematics are being closely guarded. Also available on iTunes and VUDU

When the investigation of a dead millionaire leads the CSIs to an elite dating service, Ryan poses as a wealthy businessman to expose the matchmaker's lies. Also available on iTunes

Pieces of Chance's past are revealed as he races to stop his former partner from assassinating a visiting foreign dignitary. Emmanuelle Vaugier and Lennie James guest star.