Brothers & Sisters, 9.30pm, Seven Justin Walker self- righteously uses honesty about his addiction to demand similar honesty from his brother- in- law Joe over that kiss with Rebecca. Holly vengefully blows the secret to Sarah, which looks like it might be the final nail in the coffin of Joe and Sarah’s struggling relationship. But what really did happen? Could it be that Rebecca is not quite the little innocent she pretends to be? Holly knows her daughter well. Torchwood, 9.40pm, Ten Day one on the job for Gwen as an alien investigator ( episode two for us), and naturally a meteor containing a gaseous alien crash- lands in Cardiff. The host body is a young woman disenchanted with her boyfriend. Once the alien is on board, the woman becomes a sexual predator. Her first kill is caught on a surveillance tape, viewed by Torchwood. At the climactic moment, the man screams and turns into a pile of dust. ‘‘ He came and went,’’ quips Captain Jack. Boston Legal, 10.30pm, Seven The great thing about Karen Walker, from Will & Grace , is that the helium voice belongs to the character. This allows Megan Mullally, pictured, to effortlessly shed Karen to take on the role of Renata Hill, a bride covered in blood who also happens to be an attorney with an identity crisis. She runs to Alan Shore ( James Spader) to help clear both her names.