Debbie Rowe:

Arnie Klein is a Mystery

10/29/2009 1:30 AM PDT BY TMZ STAFF
Michael Jackson's ex-wife, Debbie Rowe -- Arnie Klein's former nurse -- claims she has no idea why her former boss injected Jackson 51 times in three months, telling us, "I don't know why Klein does anything. He's Arnie Klein."

TMZ ran into Rowe as she walked into a screening of the Jackson bio-flick "This Is It." We're told Rowe absolutely loved the movie.