David Oyelowo tries to stop his niece’s murder in this time-bending trailer for Blumhouse horror Don’t Let Go By Poppy-Jay Palmer 18-07-19 3,384 The trailer for upcoming Blumhouse horror Don’t Let Go has dropped and it’s filled with juicy time-related mysteries. Check it out:  Here’s the film’s synopsis: After Detective Jack Radcliff’s (David Oyelowo) family