
For the longest time, the Rogues didn't have any cards that could "cheat out" clues--that is, get them without having to pass an investigate check. While other classes had such staples as Evidence!, "Look what I found!", Drawn to the Flame, and Working a Hunch, Rogues couldn't get clues in any other way than passing checks. This was mighty inconvenient.
And not only did Rogues have no way to get clues without passing checks--they didn't have any level 0 cards aimed at helping them pass those checks, either! (I refuse to count Dario El-Amin as a level 0 card that helps with investigation. He just isn't. Sorry.)
Now, enter Eavesdrop, our first level 0 Rogue investigation card (again, not counting Dario). But it falls a little flat, I think. It is just a little weak compared to the "discover 2 clues" cards that other factions get (you can add Scene of the Crime to the list, now.) The main problem is that you still have to pass an Intellect test. To do that on high levels, you'll need to boost considerably. Either you accept a high chance of a wasted action, card, and resource because you failed the test, or you have to dedicate way more resources than what other classes are putting in to get the 2 clues.
And that's not to mention the problem of having an unengaged enemy available. You'll probably have to evade to make that happen. Now perhaps you wanted to evade the enemy anyway (though this won't always be true), in which case we shouldn't count the action and skill test (or more) needed to do that as part of the total cost of the card. But it's still an inconvenient requirement, one that makes this card far less reliable than its competition in other factions.
Obviously, this is most playable for Finn, who gets that free evade and combines high Intellect and Agility. It's a decent choice for him to add some tempo to his clue gathering at the expense of some risk. For the other Rogues--the ones who really could have used some cluefinding help--this probably isn't the answer. They'll still need to use either XP cards or cards from other factions to solve their cluefinding issues.
This card reinforces the trend that Rogues perform better at lower levels. My complaint about still having to pass an Intellect test is perhaps not such a big deal on Easy or Standard. But it sharply limits this card on Expert (at least for people not named Finn.)