Dex Parios – a strong, assertive and sharp-witted army veteran with a complicated love life, gambling debt and a brother to take care of – works as a PI in Portland, Oregon. With only herself to rely on, she solves other people’s messes with a blind eye toward her own, finding herself at odds with the police and in the firing line of criminals.

Dex faces off against Artie Banks to take down wealthy real estate mogul Randall Tapper. Meanwhile, Detective Cosgrove leads an investigation to find Wallace Kane, a prisoner on the loose.

Dex is confronted with unresolved feelings from her past when she is hired by Sue Lynn to investigate a case with the widow of Dex’s former flame. Meanwhile, Dex and Grey’s friendship is put to the test by his new romance with Liz.

Dex goes under cover as a potential buyer to help Hoffman and Grey with the next phase of their drug case; Dex becomes close to a fellow veteran support group member; Ansel struggles to maintain order at Bad Alibi and enlists Tookie's help.

To get justice, Dex takes matters into her own hands after finding herself at the forefront of a murder investigation where she’s the prime suspect. Meanwhile, Hoffman struggles to remain impartial in the investigation and could lose everything if he continues to help Dex. Elsewhere, Grey attempts to work on his budding relationship with his estranged father while a familiar face from the past makes a surprise visit. Season finale.