Revealing mistake: Right after Nell sends Hugh to hell, Dr. Marrow and Theo come out of hiding behind a pillar. As Marrow puts his hand on the pillar, it squishes in as if it was made of foam rubber, instead of stone. (01:39:50)
Revealing mistake: When Luke tries to ram the gate with his car, a huge piece of spear-point wrought iron falls and impacts the roof of his vehicle. As the others rush to rescue Luke from the car, we can see the wrought-iron spear points flexing and bending, because they are made of rubber.
Answer: Crain had two wives. All of his children from his first wife, Renee, died at birth and then Renee killed herself. Later we find out that Crain had a second wife, Carolyn, and they did have a child who survived. Carolyn is Eleanor's grandmother.
Bishop73