Horsch House_ FBI Searches for Evidence of Murder.

The FBI and Philadelphia Police are intensifying their forensic search of the Horsch House, examining possible blood evidence, digital recordings, and areas of the property that could hold critical clues to the disappearance of multiple women. Retired NYPD Sergeant Bill Cannon breaks down the latest investigative developments, the use of luminol, and how forensic evidence could help detectives establish whether murders occurred inside the home. Can investigators uncover the evidence needed to prove homicide and build a murder case even without recovering the victims' bodies?