A Question of Trust

The Truth About Archie and Pye

A Question of Trust is a book by Jonathan Pinnock. It is the second in the Mathematical Mystery series and was published by Farrago Books in April 2019.

Blurb

A witty, fast-paced thriller with a dash of mathematics and a large dose of danger

Life is not going smoothly for Tom Winscombe. His girlfriend Dorothy has vanished, taking with her all the equipment and money of the company she ran with her friend Ali. Now Tom and Ali are forced to eke out an awkward shared bedsit existence while they try to work out what she is up to.

Meanwhile, Tom has other things on his mind, including how to untangle his father from a cryptocurrency scam, how to break into a hospital in order to interrogate an old acquaintance and what is the significance of the messages he’s been receiving from Rufus Fairbanks’s LinkedIn account.

Tom and Ali’s investigations lead them in a host of unexpected and frankly dangerous directions, involving a pet python, an offshore stag do and an improbable application of the Fibonacci sequence. But at the end of it all, will they find Dorothy – and will she ever be able to explain just exactly what is going on?

Critical Reception

The reception to the book was generally favourable. Professor Ian Stewart, author of Do Dice Play God? and the Science of Discworld books, summed it up as follows:

A dash of IT, a sprinkle of maths, an engaging and all-too-believable cast of anti-heroes, and a bonkers plot with all the precision and elegance of a Fibonacci spiral. Profane, irreverent, witty well-aimed, and fizzing with imagination.

Summary of Plot

Dorothy has vanished and all the equipment belonging to .CHAN has also disappeared, along with everything in the company's bank account. Tom and Ali are reduced to sharing a festering bedsit while they try to work out what has happened. Their first port of call is a convention of Vavasorologists in an upstairs room at The Dog and Fishbone. Here, Ali makes the acquaintance of Patrice while Tom goes chasing after Benjamin Unsworth. However, while Tom isn't looking, Benjamin is poisoned by an unknown agent and rendered unconscious.

In order not to get in the way of Ali's burgeoning relationship with Patrice, Tom goes to stay with his father, who it turns out has just fallen victim to a cryptocurrency scam. Tom decides to try to sort this out and arranges to meet with Matt Blank, a friend of a friend who is into crypto PR, who gives him a pass to the forthcoming launch of the Tulpencoin Super Plus ICO. In the meantime, he goes to the library to use the computer to try to find out where Benjamin is, which turns out to be St Jude's Hospital. He is also alarmed to receive a series of opaque messages from the deceased Rufus Fairbanks via his LinkedIn account, but he puts this to one side and instead concocts a plan to get into St Jude's. Meanwhile, Ali has brought home Bertrand, Patrice's ball python, to look after.

At St Jude's he meets Helen Matheson, who is in the process of removing Benjamin. He helps her carry him out, but they come under attack. Matheson shoots their attacker and they escape in a taxi, although she then chloroforms him and dumps him in the middle of the Kent countryside. Following an unexpected encounter with a Shetland pony and his owner, Tom makes his way back to London in time for his afternoon computer slot at the library, where he receives some more cryptic emails from Fairbanks. He goes back home and is so tired, he manages to accidentally free Bertrand, who immediately disappears under the floorboards.

The next day, Tom goes back to the library and receives another cryptic email and finally realises that whoever is behind the account is sending him a Fibonacci sequence. In the evening, he goes to the Tulpencoin launch at the Old Rococo Theatre, where he hears Kevin Wilberts and Tiger de Montfort speak. He goes backstage and sees a mysterious stranger ordering the killing of Matt Blank in the presence of both Wilberts and de Montfort. He escapes after being chased through the backstage area by Gunther and Dirk. The Old Rococo Theatre burns to the ground that night.

Tom and Ali wonder if the Fibonacci stuff is an attempt to lead them towards something on an old hard drive from Tom's laptop, which was sold in part-exchange for a new one. They go to Mad Mickey's Hardware Exchange to find it, but find's Mad Mickey dead. Eventually they manage to retrieve the drive from Mad Mickey's lock-up garage and take it back to the flat, while Ali negotiates with Patrice on the use of her computer to find out what's on the drive. On the way to Patrice's the next day, Tom is held up by a gunman who is after the drive. He steals the bag, only to find out that Bertrand the python has snack in there as well. In his panic, he manages to shoot himself, allowing Tom to escape.

At Patrice's, it turns out that the reason that .CHAN was broken into was actually to steal Tom's laptop, which should have had something important on it. However, because the drive was swapped out, it's now on the one retrieved from Mad Mickey's. Ali connects it up to Patrice's machine and it turns out that the drive contains Rufus Fairbanks's crypto wallet, almost certainly copied by Dorothy on the night Rufus died. It also contains a virus planted there by the Tulpencoin people that connects to a server in order to allow it to steal any crypto it finds there. It turns out that the server is located of the coast of Burnham-on-Sea, on an artificial structure known as Channellia. Tom recognises the owner of Channellia, The Hon Sholto Chelford-Bickerton as the man who ordered the killing of Matt Blank.

Tom resolves to smuggle himself onto Channellia. He notes that their cover story is a venue for stag weekends, so he goes to Bristol and infiltrates the Todger Squad as they prepare to embark. He is surprised to encounter Dorothy, who has also smuggled herself on board, disguised as a croupier.