The final revelation in Stephen Cone's play--which traps a retired NYPD officer with an unwelcome interloper in a remote beachfront house--is unsettling and graphic. It's also disappointing, since the last ten minutes get pulled out of the ether in Cone's purposely elliptical Sam Shepard-style script. But Mark A. Steel as the ex-cop and Tyler A. Monroe as the young man make their simultaneous attraction and repulsion mesmerizing. And though director David Zak indulges in one of his trademark tics--actors hang from the rafters--his staging is otherwise wonderful, especially an ingenious scene in which the characters imagine the walls disappearing (aided by a transparent scrim). Perhaps Zak understands the characters' motivations better than Cone wants us to; great tech work, spot-on stage combat, and attention to tone go a long way toward redeeming this uneven script. Through 4/10: Sat-Sun 6 PM, Mon 8 PM. Bailiwick Repertory, Bailiwick Arts Center, 1229 W. Belmont, 773-883-1090. $20.