David Williams

Who is Hassan and what is behind his mysterious Valentine message to Amina? Who is the young beauty chased across a lorry park in the early hours? These are the questions local phone-in host Marc Niven struggles with as he is drawn deeper into the city's secret places. The question he already knows the answer to - why did Sam leave him so sudden...

Advanced textbook; many examples and exercises, often with hints or solutions; code provided for computational examples and simulations.