“Terror Comes Knocking” (*1/2 out of four) was a botched adaptation of the true story of Marcela Borges (Dascha Polanco) who was pregnant and had to defend her family when armed intruders (Mitchell Jaramillo, Ivan Lopez, and others) showed up at her Florida home and demanded $200,000 or they would all be executed and she had to outwit and outmaneuver them. Thoroughly stale execution of a true story that (one would think) would have taut tension and suspense and instead winds up a yawning retread of “Desperate Hours.” This is one “knock” not worth answering.