Yes sounds like open circuit on the neutral, cut off the cable at entry point, around 7 inches then check again with meter.
If still open circuit then it could be a break in the plug end of the cable.
If so cut off 7 inches and recheck continuity, if ok fit a quality 13a plug. If not then the break could be further down the cable so just fit a new one.
Generally, when tracing a cable fault, just keep the probes on either end of the cable in question with crocodile clips and then wiggle the cable till you see the meter reading correctly if its intermittent.
The other method, is using an oscilloscope, high speed schmitt trigger pulse fired down the cable - measure with scope and on the trace you will see a little spiked peak, that will visually tell you where the break in the cable is roughly - ok for finding a break on a 100ft cable on an aircraft, but really not practical for a hoover