Theatre Three, 412 Main St., Port Jefferson will hold an open cast call for strong singer/actor/dancers (ages 16 and up) on Tuesday, July 10 and Monday, July 16 at 7 p.m. for its upcoming production of “The Addams Family.” Prepare 16 bars from the song of your choice; bring sheet music in the proper key and be prepared to dance. Readings will be from the script. Please bring picture/résumé. Performances will be held from Sept. 16 to Oct. 27. For further information, call 631-928-9202 or visit http://theatrethree.com/auditions.html.