It's not everyday you get a text from a dead friend, especially if you saw them being executed by guillotine, which is why D.S.I North Daniels was a bit sceptical when his ancient Nokia Cityman 1320 recieved a text (ding!) from Jane Stephen's number. Double-checking proved that it was the real deal, especially since it had Jane's trademark cipher applied to it:
Text Copy
helpivfbghnkjdoaqriegotpsjqtmkprksyubqlnusxlcotwmrhrminmnvctvdsexouvusjwwvtlpfduocefwqfpwxgxqgnohmptkuqliwyhyrvmxvsduwrnsyziiwzazxtjafujyjvkovaxtzbbcbnwapkkcxqdboceghwyzdfadegyucpezhidjghvixrwqjefyxlsfrklytgiumrh
Unfortunately, North hadn't met Jane for 7 years, so he couldn't remember how the cipher worked. However, after a bit of a struggle, he managed it. Marvellous...
"Hang on, that's not right - it's complete nonsense!"
North read and reread the message, but it still failed to make any sense. Maybe he'd missed something. Jane's research on border communications made her doubt security, so she was very cautious about sending messages, so she tended to go one extra step. "Hmmm..."
North's eyes lit up, and after a quick bash on his laptop, he sprinted out of his room, and sprained his ankle on the 12th floor, so getting to the police station would take a little longer...
What is Jane's completely decoded message?
Hints
1. I've inserted a new tag - Geography
2. After some digging around in his office, I found this note in North's desk. It seemed as though he'd decoded the passage completely, and was trying to find some sort of message by picking words out:
Text Copy = helpivfbghnkjdoaqriegotpsjqtmkprksyubqlnusxlcLOVINGrminmnvctvdsexouSONGSwvtlpfduocefwqfpwxgxqgnMAKINGuqliwyhyrvmxvsduwrnsyziiwzazxtjafujyjvkovaPINTScbnwapkkcxqdbocOCCUPYdfadegyucpezhidjghvixrwqjeTRIALSrklytgiumrh