Off the Grid: Sally breaks down Outside Hire

There are spoilers ahead. You might want to solve today’s puzzle before reading further! Outside Hire
Constructor: Ryan Mathiason
Editor: Jared Goudsmit
OUTSIDE HIRE: The letters of the word HIRE are found on the OUTSIDE edges of each theme answer: HIDDEN TREASURE, HIGH SCORE, and HINDU SCRIPTURE.
I always make a guess about what the theme of a puzzle will be once I read the title. Today the word OUTSIDE led me to believe (correctly, as it turns out) that the theme would be found on the OUTSIDE edges of the theme answer. I guessed those edges would either feature letters from the word HIRE, or from a synonym of HIRE, such as employ. Uncovering HIDDEN TREASURE (see what I did there…) confirmed my guess, and let me know the word at the OUTSIDE edges was in fact HIRE. Thank you, Ryan, for this enjoyable puzzle.