PARANORMAL BIG CAT?

We go back to 1980s England, where a strange cat was reported in the Chiltern Hills.  It seems to have been a puma and it was on one occasion at least reported as walking along beside the freeway.

Hunts were mounted for the beast, including one by helicopter.  However, it showed a singular ability to vanish.  One one occasion the army tracked it down and it took refuge in a barn.  When the barn was entered, however, there was no sign of the mystery felid.

This gave rise to speculation that the beast was interdimensional.  It was never found.