Watch Masters of Sex Online: Season 4 Episode 1

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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 the Associate Editor for TV Fanatic. Follow him on Twitter.

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Masters of Sex Season 4 Episode 1 Quotes

Being sex experts, it's not enough. Because when you've tried and tried and tried... and she still leaves you anyway, then you must look at yourself in the mirror and say the words that you've been too afraid to say... she does not love me.


I also know that carrying a hidden truth year after year, even for a lifetime, can become an intolerable burden. There's a certain kind of freedom in just giving up.