Frank Shamrock walks out of the cage after losing the...

Frank Shamrock walks out of the cage after losing the Strikeforce middleweight championship to challenger Cung Le in San Jose, Calif. Le won after Shamrock did not answer the bell in the fourth round. (March 29, 2008) Credit: AP

Here's a sneak peek at a new Frank Shamrock documentary airing Thursday at 11 p.m. on Spike TV.

"Shamrock: Bound by Blood" includes a look at his MMA career, his backstory as an imprisoned teen and an on-camera meeting with his estranged adoptive brother Ken Shamrock.

If you've read Shamrock's autobiography (pretty good read, by the way), this is the movie version. Sort of.

(Newsday's app users can watch the video at http://bit.ly/1cw1QRm)

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