Set against the backdrop of a mountain resort town, MOSAIC follows popular children's book author and illustrator Olivia Lake (Sharon Stone), whose literary success makes her a local celebrity in the tight-knit community. At the annual fundraiser, where she is accompanied by trusted friend and confidante JC (Paul Reubens), she sets her sights on a handsome, young newcomer in town, aspiring graphic artist Joel Hurley (Garrett Hedlund). Encouraged by the doting and flirtatious Olivia, he accepts her offer for a place to stay and work, but the unexpected arrival of Joel's girlfriend, Laura (Maya Kazan), sends Olivia into a jealous tailspin. Olivia subsequently has a chance meeting with charming stranger Eric Neill (Frederick Weller), another new arrival in town, whose duplicitous intentions to sweep her off her feet for financial gain have an unexpected outcome. When Olivia disappears on New Year's Day, leaving behind a blood-soaked studio, MOSAIC becomes an intricate whodunit, and it is up to detective Nate Henry (Devin Ratray) and Eric's sister, Petra (Jennifer Ferrin), to unravel the mystery.