The Detour (1979)

During a school outing, Dominic’s [John Galdes] pet dog Rameses – which a sculptor [Adrian Rendle] has sketched for a work depicting the Egyptian dog-headed god Anubis – runs away. While looking for the animal, Dominic visits the sculptor’s home, and on seeing the finished sculpture experiences a premonition of evil. That night, however, he has a dream about a religious revelation at the Miraculous Grotto, and the next morning goes to the site to find Rameses unharmed.