A powerful and tense drama about how the past can haunt the present, when a former spy becomes a target for an Iranian hit man. In a remote village of the Suffolk coast, Frank Perry waits for his past to catch up with him. For some years he spied for MI6 in Iran on their chemical and biological weapons programme. The information he brought back led to the deaths of many Iranian scientists and he seriously undermined the progress of the weapons programme. Now Iran will have its revenge and has despatched its most deadly assassin to complete the task. Codenamed the Anvil, he will find Perry, unless Perry's protector's can reach him first, but the first threat comes much closer to home.