Darrell's Kodak is the only singular signature item bearing the investigator's name that is not unique. Is this difference from established precedent an oversight in development or is there a thematic reason?
Minor spoilers for Miskatonic Museum...
If you resolve the scenario and Adam Lynch never leaves play, then you do not update the chaos bag.
If the player with Lynch resigns, then he does leave play and you do update the chaos bag.
None of the resolutions let you keep him in your deck for future adventures - nor would you want to, considering his forced text.
I like this card! I'm using it in an old-school Dark Horse "Ashcan" Pete deck with Madame Labranche--all cards I'd run anyway. I'm happy to have it sit in my hand until a turn when I don't otherwise need the good lady's services, and that makes it essentially a "free," fast, slotless,1/1 heal on Duke. I'm also running Forced Learning and more often than not I choose Trusted when it appears in the upkeep phase. I also like that increasing an ally's max health and sanity can help get full value out of other healing cards (e.g., Bizarre Diagnosis). And buffing Duke is as good as healing Ashcan. Niche is not the same as bad.
I ran the Black Cat with Charlie Kane and had some fantastic moments. The double Wilds give a +3 to any 1 test, possibly another with inspiring presence or Bonnie. Here are some more words to complete this review.
This will usually be bad, yes, I agree with that, but there is one instance this is great, and that is TFA.
In TFA, you will often need to evade enemies instead of killing them, and an asset that costs 1 to evade with 6 base with 4 supplies is really good if you can afford the 4xp upgrade cost.