After Jason collapses in front of Dr. Young, an MRI reveals Jason has a brain tumor - Jason and Ruben's plan has worked, the tumor surgery will act as a cover for Ruben's implant to destroy Ian once and for all but Lena may soon discover the truth and put a stop to their plans. Meanwhile, Ian has no intension of going down without a fight and will stop at nothing to save himself.
s01e01 - Pilot
s01e02 - Don't Answer the Phone
s01e03 - Morning, Sunshine
s01e04 - Me Likey
s01e05 - A Stand-In
s01e06 - I Can't Keep Your Secret
s01e07 - Six Feet Deep
s01e08 - The Cookie Jar
s01e09 - Circadian Rhythms
s01e10 - Mine
s01e11 - But I'm Allergic to Cats
s01e12 - You Made Me Do This
s01e13 - This Is How It Ends
Dr. Jason Cole is a highly respected neurosurgeon who has it all - a lucrative career, confident charm, the gift of compassion. But he also has a deep, dark secret. One morning when he wakes up disoriented in a wrecked hotel room amidst several near-naked women he's never seen before, he knows one thing: it's happening again.
Every night at the same hour, something inside Jason changes, leaving him almost unrecognizable - seductive, devious, borderline sociopathic. This new man is his dangerous alternate personality who goes by the name of �Ian Price'. For years he's battled Ian, keeping him in check with a powerful experimental sedative.
But now his - their - body has developed a resistance to the serum, setting Ian free once again. And to make matters worse, after being suppressed for so long, Ian's hell-bent on taking revenge on his oppressor. With everyone Jason cares about at risk - patients, friends, coworkers and even the woman he loves - he's got to stop Ian once and for all. Will they find some common ground, or will they bring each other down? Hell hath no fury like an alter ego scorned.