Call your friend to confirm they are in trouble or check with other friends. It is possibly a 'Help Me' email which typically involves a victim receiving an urgent message from a relative or friend saying they have been mugged on holidays and need urgent help. All their money and cards, as well as passport and mobile phone, have been stolen and they need urgent financial assistance until they get home. You are asked to send money using a money transfer service and they will repay you. You agree and the fraudster calls to an office of the service pretending to be your friend using fake ID purchased over the internet and withdraws the money.