Currently Being ModeratedFeb 1, 2013 6:26 AM (in response to zmarie91)
Are any of the Apps in fullscreen mode? If so then when an app is in fullscreen mode it appears in its own space.
If that is the case just take it out of fullscren mode to get back to your normal operation.
If it's not fullscreen then from the Mission Control screen place your mouse pointer over any screen but screen one. An X should appear in the upper left hand corner of the little screen. Click it and it will be deleted leaving you with one screen.