Meticulously researched and artful telling of a truly great man's life. However, it is let down by the biases the author has for Oldfield, who was his uncle. While this bias, based on deep seated awe and affection, is understandable, it leads Pearce to fall into fulsome defences and overwrought praise.
This bias is a shame, as it feels unnecessary - given Oldfield's record, clearly acknowledging his faults and failures would have strengthened this work. I do agree with Pearce's conclusion that Oldfield was most likely one of the best spies MI6 had as well as its greatest Chief.
A special mention must be made of the last chapter, wherein he deals with several smears brought against Oldfield towards the end of his life and after his death. Pearce unpicks and refutes this forensically, while also successfully capturing the emotional toll which these had on Oldfield and, later, his family.
The manner in which Oldfield, who served his country nobly for 40 years, was subjected to rumour, slander, and smear due to his sexuality, is truly upsetting to read. Oldfield, who wished to keep that aspect of his life private, was effectively outed by press and disgruntled rivals.
Pearce, however, refuses to let his Uncle's legacy be defined by these smears, ending with a portrait of his character which captures the fullness of this wonderfully complicated, kind, and intelligent man.