While Alissa is away in rehab, Kristina informs Alissa's addict boyfriend that Alissa may not be returning to his home until he can get clean from heroin, too.
Kevin is feeling the diabetic effects of having low blood sugar after a night of binge drinking. After a few failed attempts of bringing his blood sugar up, he calls 9-1-1.
After reaching a final decision on whether to leave American Chopper, Mikey discusses with Junior next steps for their respective relationships with Senior.
After four years of consuming her own urine, Carrie is ready to tell her friend, Denise, about her addiction. Carrie is concerned that Denise might not believe her, so she offers to drink it in front of her to dispel any doubt.
Worried that the highly educated opposing team will out-engineer them, a divided Team Blecha Brothers debates the mechanics of their anti-gravity room.
Find out what surprised the Paul Jr. Designs crew at the 9/11 Memorial Bike unveil, and why you don't see photos of their bikes before the show airs despite the public reveals.
Who could resist Minnesota Vikings defensive end Jared Allen? See why PJD's first charity bike is in support of Jared Allen's Homes for Wounded Warriors.