6B (Fringe)
"6B" is the 14th episode of the third season of the American science fiction drama television series Fringe, and the 57th episode overall. In the episode, the fringe team investigates mysterious deaths at an apartment building, the result of a merging between the prime and parallel universes; while there, they encounter a woman who claims to be able to see the ghost of her deceased husband. Story editors Glen Whitman and Robert Chiappetta co-wrote "6B", while cinematographer Thomas Yatsko directed. The episode featured appearances from recurring actors Ryan McDonald and Seth Gabel as well as one-time guest stars Phyllis Somerville and Ken Pogue. The episode first aired in the United States on February 18, 2011 on the Fox network, and was watched by an estimated 4.1 million viewers.