Katherine Jackson, Michael Jackson's mother, is having to reach out to the man who is in jail for killing her son because she needs his help badly!

TMZ.com has learned that Katherine is in a battle of a wrongful death lawsuit against AEG, claiming the company negligently hired Dr. Conrad Murray, who she needs his help now, and failed to properly supervise him.

The problem is, she needs Murray to go on record, explaining how the arrangement went down, so she has subpoenaed the Doctor. Katherine wants Murray to acknowledge that AEG masterminded the plan to bring him on board.