Four years ago Erica Strange was single, barely making enough money to get by, and had a long list of regrets. Thanks to her time-travel therapist Dr. Tom, Erica has turned her life around, but nothing can prepare her for her most difficult challenge yet - saying goodbye.

After last season's cliff-hanger, Erica begins the final stage of her therapy as a doctor in training, and she is shocked when her first patient is revealed to be someone she knows.

50/50 Press' new assistant, Rachel is struggling under Julianne's particular management style, while Erica tries to get to the root of Julianne's bullying.

Erica wishes for more control, and gets it when Dr. Tom grants her time-travel powers.

Erica grapples with life's biggest secret.

Erica lives her relationship fantasies on Dave and Ivan's wedding day.

Erica reels from Sam's shocking news. Barbara struggles to bury the past.

Outside the office, Dr. Tom is repeating an old pattern. Erica and Adam hit a rough patch. Kai is back from the future.

Brent is failing to jive with the new River Rock. Erica returns to her high school days in order to help an exchange student fit in.

Erica runs into Ethan, and they bond in both the present and past. Meanwhile, Brent and Julianne share a revelation.

Erica is sent back to her family's 1992 Purim party, after Erica gets an unwelcomed birthday surprise from Julianne.