Sometimes a case is many years old and consists of only photos and perhaps a police report. These "cold" cases are very challenging, but today's technology offers new methods of examining "old" crashes. The fatal crash that killed James Dean was investigated some 50 years after the 1955 crash. The crash of the late Ted Kennedy on the Chappaquiddick bridge was reconstructed several years after it happened in 1969. Your "cold case" may have sufficient information to answer questions from years ago.