Series 4
Episodes
1 The World's Strangest Ghost Town Jun 27, 2019 
2 Palace of Death Jul 4, 2019 
3 Guernsey Nazi Towers Jul 11, 2019 
4 Bodie USA Jul 18, 2019 
5 Tunnel To The Underworld Jul 25, 2019 
6 Escobar's Ruin Aug 1, 2019 
7 Villa De Vecchi Rhodes Aug 8, 2019 
8 Pyramiden Norway Oct 31, 2019 
9 Behind The Berlin Wall Nov 7, 2019 
10 Bannack USA Nov 14, 2019 
11 Buckner Building Alaska Nov 21, 2019 
12 1936 Olympic Village Berlin Nov 28, 2019