Corey Haim's continued battle with substance abuse has apparently been caught on film.

During the filming of his reality TV show, The Two Coreys – in which he co-stars with fellow 80s trainwreck Corey Feldman -  Haim is seen in 'massive meltdown' mode during an acting gig.

Later, as the cameras continue to roll outside his trailer, the star of The Lost Boys can be heard snorting what viewers are led to believe is drugs, seemingly unaware that his sound mic is still on.

Watch the disturbing footage below.