MANDEL: Accused killer told cop he left Tess Richey alive, court hears

What a chilling chatterbox was Kalen Schlatter hours after he’d been arrested for the murder of Tess Richey.Or so alleges the undercover Toronto Police officer placed in the cell beside the accused killer at 13 division in the early morning hours of Feb. 5, 2018.Known only as UC 1 — his identity masked from the public by a large screen — the officer spent the morning at Schlatter’s...