Grandfather stabbed to death with screwdriver by granddaughter's nanny

A heroic Michigan grandfather checking in on his 3-year-old granddaughter was allegedly stabbed to death with a screwdriver by her nanny — who later chased the tot’s uncle down the street, naked and covered in blood.

Samantha Booth, 35, was arrested Friday in Royal Oak, near Detroit, after fleeing from police responding to the chaotic scene, where she was possibly in the throes of a drug-fueled “manic” episode, investigators said.

When the nanny stopped responding to calls and texts from the child’s parents, who were out of town, they asked the girl’s grandfather, David Ong, 83, to see if everything was OK, the Telegraph reported .

But when Ong also stopped responding, the toddler’s mother asked her brother-in-law to go to the home — where he found a blood-covered Booth in the basemen