When you go to Florence, who’s the last kind of person you want to run into? Loud, embarrassing Americans, of course. There were plenty of them on hand when the cast of “Jersey Shore” brought its very special brand of rude, crude and lewd behavior to the city immortalized by Michelangelo and da Vinci. “I’m going back to bloodlines of Situation,” says Mike Sorrentino of the journey ahead. Once ensconced in their living quarters, the “Shore” people do everything they do back home. They shriek. They curse. They hit. They belch. They go shopping. Oh, yeah, and Snooki gets into a car accident. “Snooki’s driving a stick. Good luck with that!” says Pauly D. Dramatic footage includes Snooki and the Situation being carried away by medics on separate stretchers.

* JERSEY SHORE Thursday, 10 p.m., MTV

Bad advice

ANDY (Missy Peregrym) is worried that her personal problems are clouding her professional judgment when a woman is brutally attacked on her watch. When the details of the assault echo the unsolved murder of a rookie, Detective Luke Callaghan (Eric Johnson) is convinced that the crimes were committed by the same suspect. Luke later tries to get Andy to follow through on his hunch after he is booted from the investigation, and she finds herself in serious danger. With Melanie Scrofano (left).

* ROOKIE BLUE

Thursday, 10 p.m., ABC

Modest wedding proposal

LIBBY’s mothers, a pair of alpaca farmers, call on Hank (Mark Feuerstein, right) after an accident leaves one with a wound that won’t heal. Meanwhile, there is cause for celebration when Paige happily says yes to Evan’s (Paulo Costanza) wedding proposal, but he must get the General’s blessing first.

* ROYAL PAINS

Wednesday, 9 p.m., USA

Leftover sitcom

FRIENDS Ben Lewis and Sara Welker use each other for moral and sexual comfort as they wait for Mr. and Ms. Right. When Ben (Ryan Hansen, left) needs a date to his sister’s wedding, Sara (Daneel Harris, far left) frets that their slick arrangement has gone on too long. Their friend Aaron Greenway (Zach Cregger) doesn’t approve.

* FRIENDS WITH BENEFITS

Friday, 8 & 8:30 p.m., NBC

Full moon rising

SOOKIE (Anna Paquin) searches for Jason (Ryan Kwanten) under a full moon; Marnie (Fiona Shaw) communes with spirits of dead. Debbie (Brit Morgan) urges Alcide (Joe Manganiello) to join a new werewolf community; Tommy trades places with Sam (Sam Trammell); Lafayette (Nelsan Ellis) feels the new spirit possess him in Mexico; Eric (Alexander Skarsgard) surrenders to his King’s will. With Deborah Ann Woll (right).

* TRUE BLOOD Today, 9 p.m., HBO

Emily sinks or swims

EMILY (Shay Mitchell, right with Eric Steinberg) has been juggling a lot of secrets lately. When her father pays her a surprise visit before a big swim meet, the pressure gets to be too much and she checks into a hospital and worries about her past with “A.”

* PRETTY LITTLE LIARS

Tuesday, 8 p.m., ABC Family