"Dentist of Detroit" gives us a look into Mozzie's past. This is a photo from the episode.
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Viewers are taken into Mozzie's past on the episode "Dentist of Detroit." He needs help with a mobster.
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White Collar Season 3 Episode 4 Quotes

I need as many buyers for my slight-of-hand-me-downs as I can get.

Mozzie

I resent your misguided understanding of things you don't understand.

Mozzie