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What can be said: Caches are popular. About two strangers, maybe a couple? But why did one come at one time, and the other at a different time? Maybe it's a defense mechanism? I think I was also protected back then: the description is similar.
By the way, it's strange that only 1 werewolf was killing... Based on the clues: we can confidently say that in the second case, the clue is a heart, because it's mentioned in the title. As for the first case: the description is vague. Areg, did you forget to put the clue?