For four characters the five hundred-quid worry bead in their pocket may be both a blessing and a curse. For elderly Dr Zachary Busner it's his life line to his autistic grandson Ben, whose own connection with technology is, in turn, a vital one. For Jonathan De'Ath , aka 'the Butcher,' MI6 agent, the phone may reveal his best kept secret of all: that Colonel Gawain Thomas is his lover.