Prime Alert, I'm Nancy Grace, breaking crime news now,

Demone Fleming's neighbors call NYPD over the 22-year-olds erratic behavior,

cops find Fleming naked, setting things in her apartment on fire.

But where are her two children?

Neighbors assume the tauts are with dad.

Dad, however, is sleeping outside in the car.

Fleming kicked him out after an argument,

after seeing Fleming take into custody,

he runs upstairs, finds the two tauts dead.

Nancy, the two children, ages three and 11 months old,

were found stabbed and submerged in the bathtub

underneath pieces of clothing.

Canada screams hysterically, calling 911 for help.

But the children are pronounced dead.

Police believe Fleming stabbed them in the neck and torso,

but will need to wait on autopsy results

to determine if the boys were first drowned.

Fleming says she killed her children

because she believed they were, quote, possessed.

She'll undergo psychiatric evaluation right now,

charged with two counts of murder.

Damian McGuire says his mom owes him money, so he threatens her.

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