Frank Condon, director of the River Stage, concludes his tenure with this production of Sarah Ruhl’s update version of the Greek myth. It turns into aching and memorable expressions of grief and loss, at times both vividly and hallucinatory. Th 7:30pm; F, Sa 8pm; Su 2pm. Through 5/16. $10-$18. River Stage at Cosumnes River College, 8401 Center Parkway; (916) 691-7364; www.riverstage.org.