Last week’s episode, a full-hour flashback set in Korea, was a wild departure – shocking, sexy, and supremely supernatural. Tonight’s episode returns to the U.S., but following the ramifications of last week’s encounters with a femme fatale praying mantis (or is it, in this case, preying mantis?). Yet it also dives, once again, into the past. This time, lots of pasts, real and imagined.