So a very specific set of circumstances in one of the campaigns has me and my wife wondering if it's possible for one investigator to attack (and damage) another investigator. We can't think of any reasons why it CAN'T be done, but we haven't found anything saying it CAN be done. Thoughts?
Did the circumstance require you to 'attack' or just to deal damage? (Were you playing Rougarou?)
Attack is only used with respect to something that is done against enemies (easiest way to note this is to look up 'attack' in the index of the Rules Ref). A card like dynamite blast or medical texts would allow you to deal damage to an investigator (though not regarded as an attack).