The Hunt For El Director

This morning at approximately 9.16am, it was noticed that El Director had abandoned his station at the computer and was nowhere to be found...having left all his beloved possessions including his trusty milk bottle, DVD of Caution Wet Paint - Chilli (The Bondage Webisode), and the Greatest Hits Collection of Lars Grooven, it became apparent to his family and friends, that something was seriously wrong with El D.

After further investigation by the local authorities, it was determined that El D.'s disappearance was down to foul play and he had in fact been kidnapped!

Here are the clues:

1) A puff of Smoke:



2) A Red Top:




3) Two abandoned milk bottles with a cold trail of milk...




And finally:

4) An abandoned knife on the kitchen sink...




But by who??! With only a handful of clues, can you work out who kidnapped El D.?

We think the we can find the clues in the Caution Wet Paint Webisodes