Continuing from the previous episode, the staff determine that Cymbalta Erika was given caused her positive drug test results, and created elevated serotonin levels that caused her unusual behavior. In Process Group, Cinammon expresses anger at her mother, who tells her she should be with her family instead of in rehab, but Erika's response to this leads to a conflict between the two. Michael talks about his regret over giving up tae kwon do. An agitated Eric talks to Drew about the feelings of betrayal he harbors toward his mother, also a recovering addict, who left the country when he was 16. Dr. Drew expresses concern over Michael and Ashleigh's inability to expressing their emotions, which he says will threaten their ability to remain sober. Ashleigh's irritation with how the others treat their surroundings leads to a fight with Eric during a Hollywood Hills hike on Day 7.

• Tom Sizemore
• Gary Busey
• Daniel Baldwin