In black-and-white home surveillance footage, a man is seen carrying a large cardboard box on the victim's front porch.
Moments later, the 44-year-old victim opens her door and the two of them exchange words before the attacker fires a large arrow into the woman's body.
They say the woman and the suspect had a short conversation before the man allegedly shot her with a crossbow he had hidden inside the box. "The crossbow was never removed from the box".
"Comments that were made to the victim by the suspect indicate that the victim was targeted and that the suspect may have carried out the attack at the request of another individual", Ramore said. Heather Raymore said it appears that the suspect was hired to carry out a hit on the suspect.
"The injuries that she sustained were absolutely devastating", Kettles said, adding that the weapon used by the suspect was a crossbow that could be used to take down big game like moose.
"It involved a lot of damage to her internal organs".
Detective Kettles said the woman spent several months in hospital and would be in a "recovery phase for the rest of her life".
The infrared camera footage showed a man wearing a white hoodie, long tracksuit trousers, black gloves and a white cap, holding a rectangular cardboard box which contained the large weapon.
The front door appears to slam closed behind him.
Investigators say they believe this was a premeditated, targeted, and isolated attack based on the conversation that occurred between the victim and the suspect.
Detective Sgt. Jim Kettles answers questions at a press conference on April 15, 2019.
"We don't know at this point how many people may have been involved in orchestrating this ... that's an important aspect of the investigation that we are trying to establish now".
At the press conference, police brought a camouflage crossbow believed to be similar to the one in the attack.
In the surveillance video, the suspect's face is not covered, but the person is wearing a hat and possibly another head cover, as well as a glove.