Marl looks over his shoulder towards the door, look for the person with "bow on belt" if the description proves incomplete, he asks for a description of their clothes.
>>Thank you friend, keep me updated, if anyone touches you contact me immediately, so I can protect you<<
He returns to the conversation at hand.
This mystery intrigues me, I am willing to lend a hand if my troubles get compensated. And yes, we should perhaps search and question at the scene of the crash, but I doubt it would be tremendously useful.
Remembering the book Marl says:
Oh yeah who was it that kept that? The one with the Mithril lining, should we take a look on it. It is magical, so useful knowledge could be inside it.