A bit later, Sandra and houseguest Dean Gerard (Walter Brooke), who are lovers, discuss Dean's latest plan for their escape. Meanwhile, Johnny and Pete go to Betty and Jeanne's room to talk about their situation. They decide to poke about the house. Betty and Johnny are stopped by Sandra and Dean, who take them back to the guestroom. Jeanne and Pete find a tunnel. They hide as a servant walks into a room. When he leaves, Jeanne and Pete go in and discover a vat of bubbling acid. They hide again when the servant returns and are horrified when he reveals a woman's body floating in an aquarium. The servant leaves again. Jeanne and Pete go back to the guestroom to tell the others what they have seen.