Longtime Fringe-favorite writer/performer Martin Dockery is back in Orlando again with another brain-bending dramedy directed by Vanessa Quesnelle, which will linger in your mind long after its chilling final fadeout. “The Stakeout” sees two suit-and-tie wearing FBI agents — Dockery as a veteran of the can-and-string era on the eve of retirement, and Andrew Broaddus as a rookie on his first day out of the academy — sitting in a surveillance van, surveilling another van that’s surveilling them right back. After eavesdropping on a distressing domestic conversation, the younger one becomes vulnerable and verbose, triggering an increasingly surreal avalanche of circular conversations centered around cyclically repeated phrases.