Metro

Prison rot for fire monster

A Queens judge yesterday threw the book at a coldblooded killer convicted of strangling his pregnant ex-girlfriend and setting her apartment ablaze — leaving her 2-year-old son to die in the fire.

“No matter how angry you were with Linda, that little boy had nothing to do with your issues. You just left him — you left him to die a brutal death,” said Queens Supreme Court Justice Gregory Lasak before he sentenced Jimmy Humphrey, 25, to 50 years to life for the murders of Linda Anderson and Aiden Hayes.

Anderson, 25, was seven-months pregnant with Humphrey’s first child when they got into an argument at her St. Albans apartment on July 13, 2010.

“The loss of my sister can never be fixed, but at least we can live knowing that justice was served,” Anderson’s brothers, Rob and Lamont Langs, wrote in an impact statement read by prosecutor Brad Leventhal.

Firefighters responded to an anonymous call — from Humphrey — and discovered Anderson’s burned body with baby Aiden laying nearby, said District Attorney Richard Brown of the “vicious murder.”

The boy died of smoke inhalation.

The jury convicted Humphrey of four-counts of second-degree murder, arson, reckless endangerment and tampering with physical evidence following a monthlong trial.

ccarrega@nypost.com