Dave Collette

The crew reunites with Harper (Gordon Michael Woolvett) when they confront a scientist bent on controlling the system.

It's "Dudes and Chicks Night" in Hawthorne Heights. While the women introduce Molly to their wine hang, bar-hoppers Dave, Gabe and Jack run into Jack's "one who got away".

Four months later, Emma's still in Seattle, climbing her way to the top of the Pinnacle ladder alongside an old flame rekindled. Jack and Izzy settle into blissful monogamy in their newly finished loft. The upcoming divorce mediation and an uncomfortable reunion hangs over all of them. Carmen and new neighbor Hannah start a lifestyle magazine.

Emma, reeling from a huge mistake, seeks solace in Carmen and finds herself in a "friendship triangle." Izzy tries to focus on completing her doctorate by volunteering at a Homeless Youth Center. Jack decides the time is right for a deeper commitment to their relationship. Nina's first ''thesis date'' takes a bizarre turn

Good news, Izzy's not pregnant, so why's she housecleaning away her feelings again? Jack inches closer to the point of no return with Ruby. All the while, the clock's ticking on the daunting arrival of Emma's hyper-conservative parents.