Oldest evidence

I have the entire series is awesome!!

Yeeeess me too!!! <3
I could re-read them a hundred times and never get tired of them.

"alongside" meaning side by side

Wamp wamp waaaaaaaaamp

Forensic science and anthropology go hand and hand on this one. The subtle details of the footprint impressions speak volumes about the walking cadence of the two who left the impressions.

In this case, they saw subtleties that probably indicated they were walking together.

Kind of a shite predator if they walk alongside the prey instead of chasing it.

Could be tracking the boy...or vice versa. There's no way to tell that both sets of prints were made simultaneously.