It is soon the release of Lamar Odom's hotly anticipated memoir, and in the book, he reveals that he once threatened to kill his ex-wife, Khloe Kardashian.

According to Radar Online, in 'Darkness To Light' Lamar to doing cocaine and ecstasy in his "man cave" in the home that they used to share together, while Khloe was upstairs.

Lamar admitted that he began hallucinating, and Khloe then called his friends for help, but when his friends left - Lamar confessed that he was so outraged he "forcefully" grabbed Khloe and yelled:

"What the f*ck are you doing? You trying to embarrass me in front of my friends? I'll f*cking kill you! You don't know what I'm capable of!"

He also revealed that Khloe once beat up a former mistress of his after catching him in a hotel room filled with strippers.

We don't know if Khloe has read all of his book, but we're certain she doesn't want him to spill ALL of the tea - and it seems he just might have.

'Darkness To Light' drops May 28.