Iona Lake:
(In Chapter 223, the last paragraph, and Police Officer Shara's description of the missing case—specifically, the latter part of the second-to-last paragraph—underwent minor changes. There's no need to revisit them intentionally; the content below will briefly describe the changes.)
...
"It must be a coincidence.."
Brian retracted his gaze from the promotional billboard for a campsite by a lake that resembled "Friday the 13th."
In reality, he had never heard of any supernatural events, nor was there likely to be a Crystal Lake or an Undead Jason. It was probably just that the geographical environment here was very similar in many respects.
After all, even in the world of movies, the locations didn't match up.
Brian walked along a small path towards the lake, pondering the information he had gathered.
According to the description by Police Officer Shara, the disappearance took place at a campsite near another lake some twenty to thirty kilometers away from this one.