(hope i'm posting this in the right place)
I understand that if an encounter card says something like "a monster appears", that it typically disappears at the end of the turn.
Does the same rule apply to monsters that are placed as a result of mythos card? It seems like an awful lot of headlines deposit 2 monsters in different street sections. I have no idea whether they pop at the end of the turn, or remain on the board.
Any help can be appreciated!