What’s on Tonight

DRAMA

Arrow: 8 p.m. on WPIX 11. Diggle and Felicity are stunned when Oliver (Stephen Amell, photo) asks Bratva to help in taking down Prometheus.

COMEDY

Imaginary Mary: 8:30 p.m. on WABC 7. A career woman’s (Jenna Elfman, above) imaginary friend which she created as a child reappears.

DRAMA

Criminal Minds: 9 p.m. on WCBS 2. The BAU investigates a vampire, who takes his victims and leaves them in the sewers. Paget Brewster co-stars.