The unicorn from the film Death of a Unicorn, featuring Jenna Ortega and Paul Rudd, was the star of the show at SXSW, pulling in loads of attention.

It’s a ridiculous horror-comedy that’s light on horror and inconsistently humorous, worth a few eat-the-rich laughs but not much else. Paul Rudd stars as Elliot Kintner, a corporate stooge headed to ...