Gene Simmons Regrets Not Helping KISS Bandmates With Substance Issues

In the 1970s and '80s, KISS was one of the biggest rock bands in the world taking over music and selling out stadiums across the globe. Behind the scenes, however, the band faced a number of problems, including members leaving the group and dealing with substance abuse issues. 

When looking back on some of those hard times, KISS frontman Gene Simmons wishes he'd done more to help. In particular, guitarist Ace Frehley and drummer Peter Criss were taking the rock star lifestyle to the extreme...