SCHENECTADY — This plot may rival the real murder mystery. On Sunday, several plastic bottles of an azure colored liquid with the inscriptions, "Winter of Frozen Dreams" were discovered outside the Times Union and at Proctors where a movie by the same title is scheduled to debut next month. Then Monday, county hazardous material crews took samples from five, 2-liter bottles left in a plastic bin in the driveway of the Daily Gazette by an older woman clad in a kerchief, police said.