Mr Mystery #9: The Mystery Of The Seventh Sword

Who want to murder Tarquin Tarn? Why will the seventh sword kill him? Will one of Alvin Soh' investigators die before the case is solved?

When a wealthy businessman receives death threats in his mail,he calls in Alvin Soh and his investigators. However,a seemingly routine case unravels into a lethal web of deception.

Who is behind the mystery of the swords?

Will Alvin outsmart his deadliest enemy?

And what will he learn of his own father's death?