In the beginning of this episode Tara enters Steed's apartment and is making a joke about a vicar. A real vicar is visiting Steed just that time telling him strange things are happening during diggings under the church were workmen are dying under strange circumstances. A self-moving black box is involved. Tara is sending a box to an expert who has got a cold so sometimes he sneezes very loudly. This man warns Tara, who also possesses a box, these boxes are very dangerous.