Complex sentence: In April, 4 of the Spider-Man costumes were stolen, and Sony put up a $25,000 reward, they were eventually recovered after 18 months and a former movie studio security guard and an accomplice were arrested.
Split into simpler sentences: In April, 4 of the Spider-Man costumes were stolen, and Sony put up a $25,000 reward for their return. They were recovered after 18 months and a former movie studio security guard and an accomplice were arrested.