But were his dreams his ticket out? When Gus’ day job demands he stop engaging in psychic detectivery, will our dynamic duo finally be separated? We’d normally say no, but with Shawn distracted by the arrival of his mysterious mother (Cybill Shepherd. I know!), it’s a dangerous time for the boys of summer. To get you excited fot the premiere, USA is showing a Psych marathon today. We’re especially fond of “Black and Tan: A Crime of Fashion,” in which the inrepid pair get their Zoolander on (1pm E/P), “Lights, Camera…Homicidio,” which finds Shawn becoming a telenovella star (no, really, it makes sense) (3pm E/P), and “Shawn (and Gus) of the Dead,” in which Gus fears mummies (4pm E/P). Hilariously. The new episode, “Ghosts,” airs tonight on USA at 10pm Eastern/Pacific, right after the season premiere of Monk.