Echo

After the death of eccentric alien life enthusiast Sunset Tuttle, a mysterious stone tablet with indecipherable symbols is discovered by his former lover. Intrigued, antiquities dealer Alex Benedict and his assistant set off on a quest to uncover the tablet's secrets, which could prove Tuttle's theories correct. However, their investigation attracts the attention of a determined assassin eager to keep those secrets hidden. "Echo" is the fifth installment in the series featuring Alex Benedict, with earlier titles also available on audio.