Complex sentence: Stan and Ollie try to escape the vengeful Muldoon, but as they are about to pack at the hotel Muldoon catches up with them and skinning them alive as promised, leaving them, except their heads, in bare bones.
Split into simpler sentences: Stan and Ollie try to escape the vengeful Muldoon, but not fast enough. The film ends with Muldoon catching up with them at the hotel, skinning them alive as promised, leaving them, except their heads, in bare bones.