This manual includes information about signs that a young person may be radicalising, some tips about how you can make contact with them to discuss this sensitive issue, and how you might think about working together with other professionals like law enforcement and social services. It has been produced by TERRA, a European wide network-based learning program. This advice is part of a complete toolkit, created for local and national governments, and for front liners coming into professional contact with vulnerable individuals or groups who may be at risk of radicalising.