Garrison is a security guard at Home Depot. When Shawn and Gus need to see some tapes to catch counterfeiter Steven Grabinski, he turns out not to be the sharpest tool in the shed when he fails to understand how Shawn could possibly know his name, even though he wears a name tag. When Shawn explains that he's a psychic, Garrison tells our duo that another psychic had already been there the previous night, Lindsay Leikin, and that she could make no positive ID. However, he still shows Shawn the tapes when he says his process is different to hers.