At first, real estate agent Elise Stern thought it was a ghoulish prank. WARNING: Readers might find some details in this story distressing. Who would prop up two mannequins in a "fake murder" scene by the pool while she was trying to sell this Toronto mansion? The prospective buyers, who were being asked to pay $7 million for the sprawling luxury home, seemed annoyed by the stunt too. "It was very weird," police later wrote of the witnesses' discovery. "They were far away and their heads were elevated and hanging on the railing leading into the pool." But as they...