Thinner Than Water

Three half-siblings are forced to figure out their relationships with their dad, with each other and with other characters swirling about in their lives. All in all, it’s an interesting exploration of the bonds of blood, and whether they’re worth keeping if they weigh down like a ton of bricks. Thu 8pm, Fri 8pm, Sat 8pm; Through 8/30; $12-$18; Big Idea Theatre, 1616 Del Paso Blvd., (916) 960-3036, bigideatheatre.org. P.R.