30 Rock “The Return of Avery Jessup” Season 6 Episode 21 May 10, 2012 30 Rock, News 30 Rock “The Return of Avery Jessup” Season 6 Episode 21 airs Thursday May 10 at 9 p.m. ET on NBC. Episode Synopsis: AVERY (GUEST STAR ELIZABETH BANKS) FINALLY RETURNS HOME FROM NORTH KOREA, BUT JACK (ALEC BALDWIN) QUESTIONS HER FIDELITY OVERSEAS. Jack (Baldwin) suspects Avery is hiding something when she is seemingly unmoved by news of his indiscretions. Meanwhile, Liz (Tina Fey) embraces her role as breadwinner much to Criss’s (James Marsden) chagrin. Tracy (Tracy Morgan) and Kenneth (Jack McBrayer) try to help Jenna (Jane Krakowski) find a sponsor for her upcoming wedding. Show Summary: Multiple award-winning comedy “30 Rock” is told through the comedic voice of Emmy and two-time Golden Globe winner Tina Fey as variety show producer Liz Lemon. The series also features two-time Emmy and three-time Golden Globe winner Alec Baldwin as top network executive Jack Donaghy and Emmy nominee Tracy Morgan as Tracy Jordan, the unpredictable star of Lemon’s hit variety show, “TGS with Tracy Jordan.” Lemon constantly has her hands full, juggling corporate interference from Donaghy and off-the-handle star antics from Jordan, all while attempting to salvage her own personal life.