number,season,episode,airdate,title,tvmaze link
1,1,1,23 Apr 07,"Scotland's Sin City","https://www.tvmaze.com/episodes/225059/cities-of-the-underworld-1x01-scotlands-sin-city"
2,1,2,30 Apr 07,"Hitler's Underground Lair","https://www.tvmaze.com/episodes/225060/cities-of-the-underworld-1x02-hitlers-underground-lair"
3,1,3,07 May 07,"Rome's Hidden Empire","https://www.tvmaze.com/episodes/225061/cities-of-the-underworld-1x03-romes-hidden-empire"
4,1,4,14 May 07,"Catacombs of Death","https://www.tvmaze.com/episodes/225062/cities-of-the-underworld-1x04-catacombs-of-death"
5,1,5,21 May 07,"City of Caves: Budapest, Hungary","https://www.tvmaze.com/episodes/225063/cities-of-the-underworld-1x05-city-of-caves-budapest-hungary"
6,1,6,04 Jun 07,"New York","https://www.tvmaze.com/episodes/225064/cities-of-the-underworld-1x06-new-york"
7,1,7,11 Jun 07,"London's Lost Cities: London, England","https://www.tvmaze.com/episodes/225065/cities-of-the-underworld-1x07-londons-lost-cities-london-england"
8,1,8,18 Jun 07,"Beneath Vesuvius","https://www.tvmaze.com/episodes/225066/cities-of-the-underworld-1x08-beneath-vesuvius"
9,1,9,25 Jun 07,"Freemason Underground","https://www.tvmaze.com/episodes/225067/cities-of-the-underworld-1x09-freemason-underground"
10,1,10,09 Jul 07,"Dracula's Underground: Bucharest, Romania","https://www.tvmaze.com/episodes/225068/cities-of-the-underworld-1x10-draculas-underground-bucharest-romania"
11,1,11,16 Jul 07,"Secret Pagan Underground","https://www.tvmaze.com/episodes/225069/cities-of-the-underworld-1x11-secret-pagan-underground"
12,1,12,23 Jul 07,"Underground Bootleggers","https://www.tvmaze.com/episodes/225070/cities-of-the-underworld-1x12-underground-bootleggers"
13,1,13,30 Jul 07,"Rome: The Rise","https://www.tvmaze.com/episodes/225071/cities-of-the-underworld-1x13-rome-the-rise"
14,2,1,28 Jan 08,"Underground Apocalypse","https://www.tvmaze.com/episodes/225072/cities-of-the-underworld-2x01-underground-apocalypse"
15,2,2,04 Feb 08,"Vietnam","https://www.tvmaze.com/episodes/225073/cities-of-the-underworld-2x02-vietnam"
16,2,3,11 Feb 08,"A-Bomb Underground","https://www.tvmaze.com/episodes/225074/cities-of-the-underworld-2x03-a-bomb-underground"
17,2,4,25 Feb 08,"Viking Underground","https://www.tvmaze.com/episodes/225075/cities-of-the-underworld-2x04-viking-underground"
18,2,5,03 Mar 08,"Hitler's Last Secret","https://www.tvmaze.com/episodes/225076/cities-of-the-underworld-2x05-hitlers-last-secret"
19,2,6,10 Mar 08,"Maya Underground","https://www.tvmaze.com/episodes/225077/cities-of-the-underworld-2x06-maya-underground"
20,2,7,17 Mar 08,"Mob Underground","https://www.tvmaze.com/episodes/225078/cities-of-the-underworld-2x07-mob-underground"
21,2,8,24 Mar 08,"Prophecies from Below","https://www.tvmaze.com/episodes/225079/cities-of-the-underworld-2x08-prophecies-from-below"
22,2,9,31 Mar 08,"New York: Secret Societies","https://www.tvmaze.com/episodes/225080/cities-of-the-underworld-2x09-new-york-secret-societies"
23,2,10,15 Apr 08,"Washington D.C.: Seat of Power","https://www.tvmaze.com/episodes/225081/cities-of-the-underworld-2x10-washington-dc-seat-of-power"
24,2,11,22 Apr 08,"Stalin's Secret Lair","https://www.tvmaze.com/episodes/225082/cities-of-the-underworld-2x11-stalins-secret-lair"
25,2,12,29 Apr 08,"Katrina Underground","https://www.tvmaze.com/episodes/225083/cities-of-the-underworld-2x12-katrina-underground"
26,2,13,05 May 08,"Secret Soviet Bases","https://www.tvmaze.com/episodes/225084/cities-of-the-underworld-2x13-secret-soviet-bases"
27,3,1,26 Oct 08,"City of Blood: London, England","https://www.tvmaze.com/episodes/225085/cities-of-the-underworld-3x01-city-of-blood-london-england"
28,3,2,02 Nov 08,"Okinawa: Tunnels of Hell","https://www.tvmaze.com/episodes/225086/cities-of-the-underworld-3x02-okinawa-tunnels-of-hell"
29,3,3,09 Nov 08,"Real Mafia Underground","https://www.tvmaze.com/episodes/225087/cities-of-the-underworld-3x03-real-mafia-underground"
30,3,4,16 Nov 08,"Secret Sin City: Las Vegas, USA","https://www.tvmaze.com/episodes/225088/cities-of-the-underworld-3x04-secret-sin-city-las-vegas-usa"
31,3,5,23 Nov 08,"Hitler's Trenches","https://www.tvmaze.com/episodes/225089/cities-of-the-underworld-3x05-hitlers-trenches"
32,3,6,01 Dec 08,"Barbarian's Lair","https://www.tvmaze.com/episodes/225090/cities-of-the-underworld-3x06-barbarians-lair"
33,3,7,07 Dec 08,"Land of Manson","https://www.tvmaze.com/episodes/225091/cities-of-the-underworld-3x07-land-of-manson"
34,3,8,15 Dec 08,"Gladiators: Blood Sport","https://www.tvmaze.com/episodes/225092/cities-of-the-underworld-3x08-gladiators-blood-sport"
35,3,9,22 Dec 08,"Secret Holy Land","https://www.tvmaze.com/episodes/225093/cities-of-the-underworld-3x09-secret-holy-land"
36,3,10,12 Jan 09,"Under the Rock","https://www.tvmaze.com/episodes/225094/cities-of-the-underworld-3x10-under-the-rock"
37,3,11,26 Jan 09,"Tomb of the Lost Mummies","https://www.tvmaze.com/episodes/225095/cities-of-the-underworld-3x11-tomb-of-the-lost-mummies"
38,3,12,02 Feb 09,"Gods of War","https://www.tvmaze.com/episodes/225096/cities-of-the-underworld-3x12-gods-of-war"
39,3,13,09 Feb 09,"Alcatraz Down Under: Sydney, Australia","https://www.tvmaze.com/episodes/225097/cities-of-the-underworld-3x13-alcatraz-down-under-sydney-australia"
40,4,1,07 Sep 21,"Mayan Apocalypse","https://www.tvmaze.com/episodes/2165296/cities-of-the-underworld-4x01-mayan-apocalypse"
41,4,2,14 Sep 21,"America's Military Underground","https://www.tvmaze.com/episodes/2165297/cities-of-the-underworld-4x02-americas-military-underground"
42,4,3,21 Sep 21,"Murder Tunnels","https://www.tvmaze.com/episodes/2165381/cities-of-the-underworld-4x03-murder-tunnels"
43,4,4,28 Sep 21,"America's Ancient Ancestors","https://www.tvmaze.com/episodes/2165298/cities-of-the-underworld-4x04-americas-ancient-ancestors"
44,4,5,05 Oct 21,"The Pirate Queen's Lair","https://www.tvmaze.com/episodes/2171549/cities-of-the-underworld-4x05-the-pirate-queens-lair"
45,4,6,12 Oct 21,"Templars And The Founding Fathers","https://www.tvmaze.com/episodes/2171550/cities-of-the-underworld-4x06-templars-and-the-founding-fathers"
46,4,7,19 Oct 21,"Secrets of the Ancient Metropolis","https://www.tvmaze.com/episodes/2171551/cities-of-the-underworld-4x07-secrets-of-the-ancient-metropolis"
47,4,8,26 Oct 21,"The Lost Aztec Colony","https://www.tvmaze.com/episodes/2171552/cities-of-the-underworld-4x08-the-lost-aztec-colony"
S01,1,0,02 Mar 07,"Istanbul","https://www.tvmaze.com/episodes/1732614/cities-of-the-underworld-s01-special-istanbul"