United Kingdom, April 19 -- Lisa Rinna threatened to kill Harry Hamlin while battling postpartum depression.

The 61-year-old reality TV star has daughters Delilah, 26, and Amelia, 23, with her actor husband and revealed she suffered depression after both of their births, which led to violent thoughts.

Speaking on their 'Let's Not Talk About the Husband' podcast, Lisa said: "I had horrible postpartum depression, but I didn't know it.

"I didn't know what it was. When you have your first baby, you don't know. You just don't know."

Harry, 73, shared: "You said, 'I'm gonna kill you'. And I said, 'You better call [your OB-GYN] right now.' You said, 'You better watch out. I feel like killing you.' You said, 'Keep the knives in the drawer.'"...