Ghoster declines Val's offer of a ride; he needed to bring Logos up to speed during the journey back to the park on everything Ollie had already discovered about the killings and the Sleepwalker, Ryan, and he didn't feel it necessary or prudent to share the morbid details with who he found himself referring to as 'Ollie's Kids.' Hell, he thought, I wish I didn't have to share the morbid details with myself.
They arrive back at Granite Park a couple of hours after leaving the museum. Ghoster pauses for a moment to consider the visible stars dancing in the vast, dark ocean above them, and exhales. "Let's head back down to the south end of the park, Logos; maybe we'll find something."