Stream Season 4 now with KPBS Passport! Premieres Sundays, Aug. 24 - Sept. 28 at 8 p.m. on KPBS TV / PBS app. After Season 3’s shocking finale, Dan and Jasper are consumed by grief. Dan throws himself into work whilst the Professor hides in his lectures, avoiding the police at all costs. But Helena, Jasper’s therapist, helps him face back up to his police work and the team tackle some complex and dangerous cases. But through the danger and mystery, love is very much in the air.