Also known as:- April Fool's Day
- Week-end de terreur
- A Noite das Brincadeiras Mortais
- Aprildagen
- Aprillipäivä
- Die Horror-Party
- Eglima tin protaprilia
- El dia de los inocentes
- Inocentada sangrienta
- O Dia das Mentiras
- Pesce d'Aprile
- Prima Aprilis
- Fred Walton
- Danilo Bach
- Jay Baker ... Harvey 'Hal' Edison
- Pat Barlow ... Clara
- Lloyd Berry ... Ferryman
- Deborah Foreman ... Muffy / Buffy St. John
- Deborah Goodrich ... Nikki Beshears
- Tom Heaton ... Constable Potter / Uncle Frank
- Mike Nomad ... Buck
- Ken Olandt ... Rob Ferris
- Griffin O'Neal ... Skip St. John
- Leah Pinsent ... Nan Youngblood (as Leah King Pinsent)
- Clayton Rohner ... Chaz Vyshinski
- Amy Steel ... Kit Graham
- Thomas F. Wilson ... Arch Cummings
