By James Hibberd
January 17, 2019 at 03:31 PM EST

Lost fan favorite Henry Ian Cusick is a big part of the second episode of Fox’s new apocalyptic vampire thriller The Passage.

Above is an exclusive look at the show’s Monday episode that gets heavily into the backstory of his character, Dr. Jonas Lear. The Passage is based on Justin Cronin’s novels about a government experiment on prisoners that goes horribly awry. In this clip, Lear tests an experimental virus on a Death Row inmate volunteer, Anthony Carter (McKinley Belcher III).

The Passage premiered earlier this week to rather decent ratings, ranking as the night’s highest-rated drama series.

Related content: