As winter approaches a small village in the Laurentians, north of Montreal, a reclusive older woman is found strangled outside her home. Roméo Leduc, the enigmatic Chief Inspector for Homicide, is one day away from his first vacation in years but reluctantly answers the call on the case. Marie Russell did not know her elderly neighbour, and she does not expect to become embroiled in solving her murder. Like most people in her sleepy town, Marie values the quiet months after tourists and cottagers leave. But when a startling clue links the crime to a terrible incident that happened on Marie's suburban Montreal street in the 1970s, Marie becomes an inadvertent detective. As Marie and Roméo combine wits to find the killer, they are forced to face demons from their own pasts as they confront a case where no one and nothing is really as it seems.