SeriesLooks like its from the dudes that released Gemini Rue and such, a series of point-and-click adventure games.
When Rosa Blackwell’s only relative dies after twenty years in a coma, she thinks the worst is over. This all changes when Joey Mallone, a sardonic ghost from the 1930s, blows into her life and tells her that she is a medium. Whether they like it or not, it is up to them to cure the supernatural ills of New York in this critically-acclaimed series of point-and-click adventure games.
Fun! Solving mysteries with ghosts!
So that link takes you to the bundle of the first three games, however they just released a fourth. All of them have demos so check it out (the first 2 are apparently a bit rougher than the last 2 since they've gotten better at making them). The 3 pack bundle is $20 and the latest game is $15. BUT! They have a special DVD version that includes all 4 titles for $25, free shipping.
You can get that here, but only until Sunday.
I'm really, really tempted here. And I still need to pick up Gemini Rue (I missed out on its DVD version).