2 theaters shows that open this week in Marin

• See what happens when five strangers sign up for drama classes in Annie Baker’s “Circle Mirror Transformation,” which kicks off the Novato Theater Company’s newest season. It opens Friday and runs through Oct. 2 at 5420 Nave Drive in Novato; 7:30 p.m. Fridays and Saturdays; 2 p.m. Sundays. Tickets are $15 to $27. Get them at novatotheatercompany.org. Proof of vaccination required. If you’re not boosted if eligible and don’t not have an official medical exception, a negative rapid antigen test result taken that day is required.

• Get a glimpse into the lives of two suburban couples who have even more in common than their identical homes and shared last names in Will Eno’s “The Realistic Joneses,” which opens Friday at the Playhouse in San Anselmo at 27 Kensington Road. It continues through Sept. 25 at 7:30 p.m. Fridays and Saturdays; 2 p.m. Sundays. Tickets are $25. Go to square.link/u/11Nsxkgc. Proof of vaccination and masks required.