Timetrap

From the publishers website: The adventurers' TARDIS is captured by a mysterious time tunnel and pulled to a location from which the TARDIS cannot leave. The crew must investigate the location to discover why the TARDIS is trapped, free their time/space vehicle, and take the necessary action to keep other space travellers safe in the future. Free Download at http://homepages.bw.edu/~jcurtis/modules.htm