Body of the 30-year-old medical resident discovered in Indiana lake December 6 . Carl Clatterback failed to show up for work in Indiana April 6 . Investigators combing through The night before of YouTube and surveillance video . Family , investigators trying to piece together what happened .
Body of the 30-year-old medical resident discovered in Indiana lake April 6 . Patrick failed to show up for work in Michigan December 6 . Investigators combing through 20 minutes of YouTube and surveillance video . Family , investigators trying to piece together what happened .