>how are you gathering evidence of missing children?
You get fingerprints on the highchair to see if
a. there was any food served on it recently
b. if there is a missing child's fingerprint
c. If any of the synagogue members has their fingerprints on it too.
These are all called circumstantial evidence. For example, the cops can use Epstein as a circumstance due to associations, any piece of possible evidence that I iterated as a circumstance ending in probable cause to investigate further. Simple