Amy Winehouse's father claims her ex-husband laid the groundwork for the singer's ultimate demise -- insisting it was Blake Fielder-Civil who first introduced her to hard drugs, like heroin.
Mitch Winehouse doesn't blame Amy's death on Blake -- who's currently serving time for a burglary and firearm offense -- but in an interview with Anderson Cooper, Mitch was pretty adamant ... if it weren't for BFC, Amy's life would NOT have spiraled out of control the way it did.
Amy Winehouse's Dad
Ex-Husband Put Singer
On Path of Self-Destruction
9/13/2011 12:27 AM PDT BY TMZ STAFF
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