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Why do some people have a terrible sense of direction? The team receive a mysterious message from an anonymous listener who constantly gets lost. Can they help her find the answer?

This listener may, or may not, be the team's producer, Michelle. She would like to state that it's not her fault that she has been dealt a bad genetic hand which has led to faulty place cells developing in her brain. And head direction cells that appear to be pointing the wrong way. More understanding should surely be afforded to those who are navigationally challenged.

Hugo Spiers from University College London, has devised a free game called 'Sea Hero Quest' which anyone can use to test their navigational skills. Plus Catherine Loveday from the University of Westminster suggests strategies to help those who tend to get lost.

If you have any Curious Cases for us to solve please email curiouscases@bbc.co.uk

Presenters: Adam Rutherford & Hannah Fry
Producer: Michelle Martin.