(I just put spaces between the numbers to make things easier to read).
Real Life Thrillers (like Gabriel Knight)
1.
Ceremonial (but practical) dagger!
2. Laila Knight (daughter of Gabriel) uses the dagger to draw blood from her palm to complete a voodoo ritual.
Blood.
3. Heinrich Ritter (long-lost half-son of Wolfgang) donates blood to a blood-bank. (BORING!)

A blood-bank ... that is owned by a vampire! (Oops!)
Crucifix.
4. Laila Knight gets a call from Heinrich Ritter, who shares his suspicions about the blood bank. Laila gets her crucifix to Germany and flies to the bank and uses it to hold it in front of people at the blood bank. But no one reacts?
Note.
5. Once everyone in the queue have gotten over their amusement and start ignoring Laila, the man at the back of the queue hands her a note, says "You must've dropped this", and whispers: "Meet me at the pizza parlour next door."
Pizza.
6. Laila meets goes to the pizza place to meet the stranger and orders a pizza. As she sits there waiting for the stranger, she takes a bite of her pizza and finds an unusual key.
Unusual Key
7. The key has a head in the shape of a skull. Laila ponders what it could be for. She takes another bite of the pizza and notices ... the stranger is slumped over the next booth! And there's a bullet through his skull!

But ... the bullet also exposed a key-hole. Could it be? Is the stranger really a robot, and his skull really a mailbox? Nah ...
Mailbox.
8. When Laila Knight checks the mailbox, she finds a letter about a story about a vampire in Germany who supposedly made its way to the states.
Gas Container.
9. Laila has now cornered the vampire! But he lobs a gas canister at her!

Luckily, it's only laughing gas -- but Laila now just can't stop laughing! Even more luckily, the vampire is also affected - and Laila still has her last stake, left over from when she went camping!
Stake.
10. Laila, feigning laughter (she wore a gas mask, or else gets bit in the game!) - lures the vampire to her. Allows him to grab her, at which point (players must time this perfectly!), she plunges the stake into the vampire's heart!