Theatre Three, 412 Main St., Port Jefferson will hold an open cast call for “Jekyll & Hyde: The Musical” on Wednesday, July 10 at 7 p.m. and Saturday, July 13 at 1 p.m. Seeking actors-singers who move well (ages 17 to 60s). All roles open except General Glossop and Lady Beaconsfield. Prepare 32 bars from the song of your choice and be prepared to move. Please bring picture/resume if available. Rehearsals begin in late July. Performances will be held from Sept. 14 to Oct. 26. For further details, call 631-928-9202 or visit www.theatrethree.com/auditions.html.