"They'll go on to their intended travel."

But empty-handed. That is the aspect most important here. Marcus will not have to climb back into that wagon.

"The Lady Seeker and Bastien will accompany them," Derrica tells him. Her hands are very light where they ring his wrists. No magic, yet. Her eyes search his face. "They're going to gather the letters. We'll get to the bottom of this."

They'll find the danger, and root it out. This can't be a thing that happens again.