Season 4 aired between 17 Sep 2010 and 10 Jun 2011, 26 episodes.
Episodes
E01
Gettysburg
17 Sep 2010
E02
Rolling Hills Sanitarium
24 Sep 2010
E03
Return to Mackey's
01 Oct 2010
E04
Waverly Hills
08 Oct 2010
E05
Stanley Hotel
15 Oct 2010
E06
Hill View Manor
22 Oct 2010
E07
Vulture Mine
29 Oct 2010
E08
USS Hornet
05 Nov 2010
E09
La Palazza (Las Vegas, NV)
12 Nov 2010
E10
Fort Chaffee
19 Nov 2010
E11
Amargosa Hotel
26 Nov 2010
E12
Old Fort Erie
03 Dec 2010
E13
Villisca Axe Murder House
10 Dec 2010
E14
Kell's Irish Pub
17 Dec 2010
E15
Pico House Hotel
07 Jan 2011
E16
Return to Goldfield Hotel
14 Jan 2011
E17
Bonnie Springs Ranch
21 Jan 2011
E18
Witch House & Lyceum Restaurant
18 Feb 2011
E19
Jerome Grand Hotel
25 Feb 2011
E20
Yorktown Hospital
18 Mar 2011
E21
Madame Tussauds Wax Museum
08 Apr 2011
E22
Sacramento Tunnels
15 Apr 2011
E23
Hales Bar Marina & Dam
29 Apr 2011
E24
Kentucky Slave House
13 May 2011
E25
Tooele Hospital
27 May 2011
E26
Loretta Lynn's Plantation House
10 Jun 2011