“Memory,” which opens in theatres Friday, doesn't much alter the formula but makes for a brutal and bleak variation on the Liam Neeson theme. “Key & Peele” only seems more prophetic for making the actor's name plural. Do you remember the last Liam Neeson thriller? Or the one before that? Who was it that got took in that one? It began getting hard to tell these films from one another years ago, and yet they've kept coming. “Memory” is an interesting title for the latest Liam Neeson thriller.