This is earned for finding optional collectible #6. If missed on the first run, you can "Play Episodes" and select specific parts of the Episode in order to find the missing optional photos through
collectibles mode. The following collectible is described and can be seen in the video below at 6:12:
After going into the motel, look inside the closet near the balcony door. Notice the business card on the bottom right side and inspect it. Put it down, and now you'll be able to keep it for yourself to unlock this.
Getting all 6 collectibles in this episode will also reward you with the following:
https://www.trueachievements.com/a260728/dillydallying-achie...