A good’un for fans of police procedural dramas, the second season of NBC series Aquarius airs tonight. The first season saw David Duchovny play an undercover cop who, in trying to track a missing teenage girl, discovers that she has joined a small but expanding cult led by an infamous leader. Now Detective Sam Hodiak (Duchovny) finds himself drawn into a new case when he begins receiving strange packages with photos of missing girls. The series is set in the 1960s and also stars Grey Damon, Gethin Anthony, Emma Dumont, Claire Holt, Michaela McManus and Brian F. O’Byrne. A double-bill is lined up for the show’s return tonight.