Yes, they did believe the Clovis Sanitarium was haunted. The most compelling evidence they collected was during an EVP session when they heard "I like the one in the hat". They said it was the loudest disembodied voices they have ever heard.
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Ghost Hunters - 2004 Haunted Asylum 4-9 was released on: USA: 21 May 2008
The duration of Ghost Hunters is 2700.0 seconds.
It depends on then Ghost Hunters that are doing the investigation.
The duration of Ghost Hunters International is 2700.0 seconds.
Ghost Hunters - 2004 Haunted by Heroes - 8.10 was released on: USA: 2 May 2012
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Ghost Hunters - 2004 Haunted Asylum 4-9 was released on: USA: 21 May 2008
Ghost Hunters - 2004 Haunted Lighthouse 2-19 was released on: USA: 3 May 2006
Ghost Hunters - 2004 Haunted Hotel 6-11 was released on: USA: 25 August 2010
Ghost Hunters - 2004 Haunted House 7-1 was released on: USA: 23 February 2011
Ghost Hunters - 2004 Haunted Home for the Holidays 8-26 was released on: USA: 5 December 2012
Ghost Hunters - 2004 Haunted Reform School 6-6 was released on: USA: 7 April 2010
Ghost Hunters International - 2008 Haunted Village 1-4 was released on: USA: 30 January 2008
Haunted Investigators - 2009 Longwood Manor Ghost Hunters 1-3 was released on: USA: 2009
Haunted Investigators - 2009 Prospect Place Ghost Hunters 1-4 was released on: USA: 27 August 2009
Haunted Investigators - 2009 Witches Tower Ghost Hunters 1-2 was released on: USA: 1 March 2009