Complex sentence: However, it is known later that they had abducted, tortured and killed the wrong convict.Little did the couple know, the van had two convicts, one for the crime of tax evasion, and other for the serial murder.
Split into simpler sentences: However, it is known later that they had abducted, tortured and killed the wrong convict. The van had two convicts, one for the crime of tax evasion and other for the serial murder.