Showtime premiered its new series “Ray Donovan” in Los Angeles on Tuesday night. The drama, which is getting high praise from critics (see the Globe’s review in Friday’s G section), stars Liev Schreiber as a former Southie guy in Hollywood who makes problems disappear for the rich and famous. Schreiber told Variety that his wife, Naomi Watts (above, with Schreiber), helped him with the local accent. “She ran lines with me and she would do a Boston accent out of empathy,” he told the publication. “She’s English and Australian, she’s got enough on her hands without a Boston accent.” Schreiber’s character spends episodes dealing with his troubled family, a crew of South Boston characters, including his father, Mickey Donovan, who’s played by Jon Voight; his wife, played by Paula Malcomson (a.k.a. Katniss’s mom in “The Hunger Games”); and Dash Mihok, who plays a Donovan brother who received a $1.4 million settlement from the Catholic Church. (Mihok recently appeared on screen as the police officer who checks on Bradley Cooper in David O. Russell’s “Silver Linings Playbook.”) Also on the cast list for “Ray Donovan” is Brooke Smith, daughter of the late, legendary Hollywood publicist (and longtime Plum Island resident) Lois Smith .