Double Indemnity sounds like roughly the same plot as Body Heat.
According to Halliwells Film Guide, the movie was an "uncredited revamp of 'Double Indemnity' (1944)", while The Virgin Film Guide said that the movie "incorporates a plot reminiscent of 'Double Indemnity'. The Thriller Film Guide said that the "plot (although not credited as such) is a virtual reworking of 'Double Indemnity'".