A Queens woman murdered her boyfriend, had her son help burn the body, and might have gotten away with it except for a sliver of evidence left behind — her broken fingernail, authorities said Monday.
Dawn McIntosh, 46, flew into a rage at Shawn McWhorter, 43, for allegedly cheating on her, police said.
She fired two bullets into his torso as they fought at her home in Astoria sometime before Saturday morning, killing him, officials said.
Then she allegedly tried to move the body, but couldn’t.
So McIntosh called her son, Donte Watkins, 21, who, with an unidentified relative, came to help her, cops said.
The mom and son tried to hoist McWhorter’s body into the cargo area of the victim’s Jeep — leaving telltale smears of his blood on the rear bumper as they struggled, law enforcement sources told The Post.
But the body was too heavy, so they switched to Plan B, allegedly dousing it with lighter fluid and setting it on fire in another failed attempt at covering their tracks.
McWhorter’s vehicle was found about 100 feet away from his charred remains, according to the sources.
The corpse was so badly burned that authorities could identify him only by a “Sugar Sha” tattoo on his left arm.
One other critical clue was also left behind — a broken fake fingernail, which cops believe McIntosh lost during the struggle to lift the body.
As police were questioning McIntosh, they noticed she was missing one fingernail, and they confronted her, authorities said.
She confessed to the murder on the spot, cops said.
“It’s a very unusual case,’’ NYPD Chief of Detectives Robert Boyce said Monday. “On his body, we find a fingernail.
“We notice that when we talk to his girlfriend, she is missing a fingernail. We take her into custody and start speaking to her, and she makes the admission that she actually killed him.’’
McIntosh’s neighbors described her as caring more about her appearance than her manners.
“She did keep her nails done,” said a woman who asked not to be named. “She always looked angry. She would look at you and turn her head real quick.”
McIntosh was charged with murder, possession of a weapon and tampering with evidence. Watkins was charged with tampering with evidence.
The disposition of the third suspect was not clear.