When a terrorist blows up an Inner Circle line train between Liverpool Street and Aldgate at around 8.50 am on 7th July 2005, it leaves seven people dead and many others injured, some badly. In the horrific explosion one of those injured is journalist Ian Grosvenor. Also trapped and wounded is a young mother and artist, Serena Mason. Among the 'walking wounded', Ian becomes a reluctant hero by helping other passengers and carries Serena from the train, before collapsing. Ian and Serena slowly recover from the worst of their injuries, both physical and mental, but are haunted by the memory of each other and what they suffered on that dreadful day. The desire to trace and discover how each fared grows stronger with time, until it becomes almost an obsession. In all, three trains and a bus were blown up, killing and injuring young and old alike. It was 'an act of indiscriminate terror' affecting Britons and non-Britons, Christians, Muslims, and those of other or no religion. This story covers more than the young couple's aftermath traumas and recovery; it reveals a dark family secret, and highlights the importance of the love and support of families and friends in times of need. It also illuminates the ever present 'ifs', 'buts' and 'coincidences' which weave in and out of all our lives, and the wonderful power of humour. Will Ian and Serena ever find each other? And if they do, will they find happiness?