White Collar threw fans for a loop during "All's Fair."

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The series introduced viewers to Mozzie's (Willie Garson) wife, a shock considering the quirky con hasn't had many relationships. Garson explained the reasoning behind the writer's final season decision.

"It was an ongoing discussion all the time of Mozzie needs more women," Garson informed TV Guide. "He's had basically two affairs in the first five seasons. You don't want this to be like, 'Oh, by the way, I had a sex change.' It can't be something that's so ridiculous that just throws the whole thing for a loop. But it can be something that's based in reality and it's like yeah, Mozzie could have been married, of course."

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However, the writers made sure to throw a rather believable twist.

"I wanted it to be surprising in that it wasn't going to be just a one-joke thing or just a joke that Mozzie has this wife. I wanted it to have some heart to it and that you could actually understand why they have this relationship," Garson explained. "So I just wanted it to be handled in a way that wasn't obvious which is really the White Collar way, to make it not obvious."

Find out what's next for Mozzie and Neal (Matt Bomer) when White Collar airs Thursdays at 9 p.m. ET on USA. Click the video below to see a preview for the series' next episode, "Whack-A-Mole."