"Darin-" Caster was stood nearby one of the trees- where a suspicious looking mark had been carved into the bark. Her own doing, of course, but he didn't have to know that.

"I think so...but take a look at this. There's strange sigils like this all over the trees here."

Of course, the most obvious path to where she stood would walk Darin right over the ritual circle- one that would bind him in place should he touch it.