Nov 28, 2015
"We had Peter in for a lifecast for episodes three and four [Under the Lake and Before the Flood] as we'd made prosthetics for the Ghost Doctor," Kate Walshe, SFX producer at Millennium FX, told RadioTimes.com. "As we already had his lifecast, [producer] Pete Bennett and I discussed the possibility of making a skull based on Peter's own face. "We cast a version of Peter's face out in clay and, following the contours of his distinctive bone structure, pared the form back to reveal what we imagine may be Peter's own skull."