Basic flaw in the plot
This overwrought melodrama has a major basic flaw which makes the rest of the plot ridiculous. The gas station they held up at the beginning was in New Jersey,
Bogart's and Halop's characters would have been serving time in a New Jersey prison for the holdup not SingSing. Minor goofs are that the tourist sightseeing boat would have been going up the Delaware river from which SingSing isn't visible and the cliffs along the road that they fled north on after robbing the gas station didn't look like any road I've ever seen along the Jersey shore.Of course, if they hadn't shown the signpost showing that Atlantic City was 79 miles south of the gas station ,the whole issue wouldn't have arisen.