Van Helsing was leaving Dracula’s castle when the police arrived.
“I tried to stop him!” he claimed. “But The Count was too strong for me! He got into a coffin and pounded a stake through his own chest!”
He took them down into the crypt and showed them the corpse.
A mallet was in Dracula’s hand, right where Van Helsing had placed it.
His left hand.
“Wasn’t he right-handed?” said one of the police.
Van Helsing pulled out his wallet and gave them each twenty gold crowns. “No, he was a lefty.”
The men all smiled and agreed.
Case closed.