The latest trailer for this year's "Ghostbusters" reboot features prototype proton packs, screeching ghouls, and the beginnings of what could turn into a river of slime.

The new trailer contains plenty of spooks as well as a clutch of references to the original 1984 film.

Thor star Chris Hemsworth has been cast as the receptionist in the new female-led “Ghostbusters” film, working under Melissa McCarthy and Kristen Wiig.