04/23/2012 06:03 pm ET Updated Jun 23, 2012

Lane Garrison's Domestic Violence Caught On Tape (VIDEO)

Surveillance video shows Lane Garrison slapping Ashley Mattingly square in the face after he waited for her outside her apartment -- a much different story from the one Lane told his attorney after his arrest for domestic violence.

A copy of the building security camera recordings from Saturday ... and the full video shows the "Prison Break" star sitting outside his ex-gf Ashley's Beverly Hills apartment building until she arrives home.

When Ashley drives into the building's garage, Lane is seen stumbling as he runs after her.

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