How can you find out if someone has taken out a life insurance policy on your recently deceased father?

In order to take out a life insurance policy on your father, they would have needed an insurable interest. This limits it to family members and creditors. Ask! No, only your father can take out a life insurance policy on himself. He could have taken one out on himself with his friend or pastor being the beneficiary (person who collects after final debts are paid), although no one else is able to take out a policy one someone else. And no one else besides the owner of the policy may make changes to an existing policy. Hope this helps.