Why was Libby alone?
That was a key question on Masters of Sex Season 4 Episode 1 when she realized she would need turn to some unexpected allies.
Meanwhile on this Showtime drama, Masters and Johnson had to search for purpose when the effects of their fallout threatened to ruin their plans.
It didn't help matters that their personal lives were crashing down around them, but how did they manage to save the day?
Use the video above to watch Masters of Sex online to get up to speed with the latest drama.
Paul Dailly is a staff writer for TV Fanatic. Follow him on Twitter.