Book #5 from the series:
Detective Paul Cullen Mysteries
May Day
About
Paul Cullen is back.
There is a new weapon against the crime epidemic sweeping London's transport network.
MayDay
But as the safety and security app is rolled out across the capital, could the treatment be worse than the disease?
Meanwhile, across the South East of England, the Masked Mugger continues to evade the police and is becoming ever more dangerous.
As Cullen and his team of dedicated officers fight on two fronts, a third threat is growing...