Get Out star Allison Williams is reuniting with Blumhouse to star in its tech-themed horror-thriller M3GAN, the company announced Wednesday. Williams will play Gemma, a brilliant roboticist at a toy company who uses artificial intelligence to develop M3GAN, a life-like doll programmed to be a kid’s greatest companion and a parent’s greatest ally. After unexpectedly gaining custody of her orphaned niece, Gemma enlists the help of the M3GAN prototype -- a decision that has unimaginable consequences. Gerard Johnstone (Housebound) will direct from a script by Akela Cooper (Malignant) that is based on a story by James …