Complex sentence: In order to convict Pierce the prosecution theorized that Cuttino was murdered on December 18, but when her body was found, the sperm evidence was not much degraded and this evidence implied that she was not killed before December 25.
Split into simpler sentences: In order to convict Pierce the prosecution theorized that Cuttino was murdered on December 18. But when her body was found, the sperm evidence was not much degraded and this evidence implied that she was not killed before December 25.