Meghan Markle's co-star Billy Miller's cause of death at 43 revealed as mum pays tribute

'Young and the Restless’ Alum Billy Miller Died by Suicide: Details

Billy Miller's cause of death revealed: Tributes to Meghan Markle's Suits co-star as his mom reveals he took his own life aged 43 after 'valiant' battle with bipolar depression

Soap Opera Star Billy Miller's Mother Addresses His Cause of Death and Battle With Bipolar Depression