Hvorfor forlot han campingutstyret?

Terje Klevjer finds the camping equipment of fruit merchant William Anker Lie, at Trytetjern in Nesbyen in July 1972. But both Anker Lie and his car have sunk into the ground. The police's old investigation documents put Asbjørn and Kristian on the trail of where they should start their search. And who steals aircraft engines from Norwegian airports?