I haven't watched every episode, but in brief...
Mercy is still scheming to win Riley back. Her and Dr. Browning have an odd relationship. He invited her family (Jacqui, Rhys, Phoebe and Bart) over for dinner; he had sex w/ a call girl while Mercy was in the flat, so she dobbed him into his boss, who just so happened to be into call girls, too, and so let it pass; Dr. Browning dobbed Mercy into the cops about Lyndey's murder, then gave her an alibi; Mercy contacted his ex-wife, who was sporting a black eye, and lied to Riley that he had hit her (Mercy), only to learn it wasn't true.
Mitzeee's cell mate is creepy, and seems to want to help her by seeing Riley when she gets out, but Mitzeee wants her to stay away. Myra has been transferred to the same prison.
Texas and Dodger are dodging their feelings for each other.
Doug's (clichéd American) parents have arrived, and thought Leanne was his girlfriend, so she played along and randomly said she was pregnant. Now Doug is all set to get an inheritance when he marries, so Ste is pushing him to stay in the closet and cash in.
Brendan and Walker are still plotting against Samson after receiving more strange gifts. But it turns out to have been Joel and Theresa in revenge for Joel always been pushed aside by Brendan. Now, Brendan and Walker are going to gate-crash some drugs shipment or something of Samson's.
Ally kissed Ash, and broke up with Amy. She tried to kiss Ste and left town.
Phoebe got drunk and passed out. Martha let Lacey take the blame, so Callum flipped and locked Martha in a closet.
Jen's brother arrived. She got a teaching job, but still wants to be with Tilly. *This is such a non-event. Kinda creepy, and written like it's a great love story, but comes across as nothing.*
Scott left town.
Carmel also left town off screen.
