Gwen Conliffe: It is said, there is no sin in killing a beast, only in killing a man. But where does one begin and the other end?
The chunks of ice in the asylum dunking scene appear and disappear. When Lawrence is brought to the surface, he has two chucks of ice on him that fall off leaving none, but when the shot cuts to him being raised and locked upright, there's a chunk of ice on his right arm. A minute later when he's lowered again into the tank, there's a large chuck by his hip but vanishes when the shot switches showing Lawrence's left side.