This 'whodunit' is available in the UK, the USA and elsewhere, as both a paperback and an e-book. Click any of the following links for details, or click HERE (UK) or HERE (USA).
AMAZON UK AMAZON USA FOYLES BOOKTOPIA (AUS) BOXEEZ DENMARK and elsewhere
AMAZON UK AMAZON USA AMAZON AUSTRALIA AMAZON CANADA
APPLE i-TUNES BARNES & NOBLE KOBO and others,
including IDEFIX and elsewhere in the World