It's been more than 20 years since Dave Koepp and Kevin Bacon worked together. The first time around, their collaboration yielded 1999's Stir of Echoes. Now, in 2020, they're serving up You Should Have Left, an extremely serviceable horror-thriller which offers more of intriguing premise than it does satisfying conclusion. [caption id="attachment_904510" align="alignright" width="360"] Image via Universal Pictures[/caption] Adapted from the 2017 novel written by German author Daniel Kehlmann, You Should Have Left introduces us to Theo Conroy (Bacon), a retired banker who has done very well himself and now lives in …