Enraged isn't the word to describe what Marcellus is feeling right now.
He's close to going berserk at this point. Even though the police force is already searching high and low, he can't settle down at all. After learning about Winter's kidnapping, he has almost lost it. This kind of incident is something that he's always been concerned about, especially when she became one of the Middleton's.
What Marcellus didn't expect was that it had this huge of a possibility.
He's taken aback by how intricate the abduction plan was according to the witnesses. It was made to look like she was simply being escorted somewhere, and if it wasn't for Courtney and Maxine, it wouldn't be known to the others that she was actually forced.
Winter has always been uncomfortable when she's being watched, so Marcellus tried to understand that she didn't want to bring her bodyguards with her all the time.