The emergence of a powerful forensic tool has helped Toronto police crack some of the city’s most high-profile cold cases in recent years — many of which were once thought unsolvable.
On Thursday, police announced an arrest in the 2006 brutal murder of 21-year-old Patrick Santos, who was found bound and taped in the backyard of a Scarborough home. Last week, investigators revealed breakthroughs in two separate cases by identifying the remains of two women.








