It happens to us all. We really need to get some information or start a conversation but you don't know the person you are getting in touch with. You've tried LinkedIn but can't find a contact in common so there's nothing for it but sending out a cold email - here are some great tips for success.
You also make it clear why you are emailing them as opposed to anyone else. Research shows that people are far more motivated to help others when they feel uniquely qualified to do so. By outlining precisely where they fit in, you can tell a story that makes sense to them.