DISCLAIMER: Solo Review
I don't really wanna talk down on this card, because I love the idea, but in solo it doesn't do what you think it does, at least not well.
Let me explain: When you are the only investigator most locations will exactly have 1 clue on them. That means you can use the move option to dive in, but then have to find another location to discover the last clue from and get rid of the doom. In multiplayer, you can usually discover the last clue more or less in the same turn, especially when you are not the only one investigating (which is probable if you are running this card).
Also, since there is no one else revealing locations for you, you often have to use the move option "blind". This can cause you to drop doom for the resulting location to have 0 clues, face unknown investigation restrictions or nasty effects that trigger when you investigate. Of course, you could just move to a location to check it out and come back later, but I feel in solo you have to be even more action-efficient.