Rounding up the cast is Masha's boy-toy Spike (a splendidly buoyant Billy Magnussen), a housekeeper convinced she can see the future (a very game Shalita Grant) and an ethereal neighbor (the fairy-ish Genevieve Angelson).
He plays a somewhat dim boy toy in the play about a pair of depressive middle-aged siblings whose movie-star sister threatens to upend their quiet life.