Complex sentence: In 1989, von Einem was charged with the murders of Alan Barnes and Mark Langley, but the prosecution entered a "nolle prosequi" (voluntarily discontinue criminal charges) during the trial when crucial similar fact evidence was deemed inadmissible by the presiding judge.
Split into simpler sentences: In 1989, von Einem was charged with the murders of Barnes and Langley. However, the prosecution entered a "nolle prosequi" (voluntarily discontinue criminal charges) during the trial when crucial similar fact evidence was deemed inadmissible by the presiding judge.