Two interesting facts about this cards:
- you're picking up a clue from location but test is not against location shroud value, but it's just (1) (+ number of suspicions)
- you do not perform investigate action, but parley, so if locations can't be investigated (due to some Mythos cards, like Locked Door) you can still pick a clue from it, ignoring obstacle
That being said I think it shines when used in those scenarios: high shroud locations + Mythos obstacles (Locked Door or Obscuring Fog or something else).