Pieter E Haumann

While visiting Devil’s Leap, the drought-stricken farm belonging to their mother’s old school friend Archibald Darvil, Robert and Annie learn of the mysterious disappearance of Lord Darvil, the patriarch of the Darvil fortune, who disappeared 100 years earlier along with the largest diamond...

It's the holidays, and the Darvils have come to visit in the city. With the change of scenery and the cold weather outside, the children have to find something other than their normal adventures on the farm to keep themselves busy. When they discover that pets around the neighborhood have been...

After their discovery of the treasure map, the children settle in for a relaxing end to their holidays. That is, until Robert spies a large and sinister ship lurking in the fog on the ocean. Join the children as they discover the secrets of the Phantom Galleon and unearth even more clues as to...

The children are all back together again, and this time, they take a trip to the coast where they discover that recent heavy weather had unearthed a long-forgotten secret....

With Christmas just around the corner and the discovery of the Renaissance diamond still fresh in their minds, Robert, Annie, Anton, and Ellie discover that things around Darvil Manor have been mysteriously disappearing. After tracing the culprit to a traveling circus, which set up nearby...

When Robert and Annie return to Devil's Leap for their school holidays, they discover that things on the farm had changed since they were last there. Not only is there a sinister pair of nature conservationists examining a rare species of monkey beetle but there is also a new family on the...

During a surprise visit by the Bheles, the children explore the city, where they make a startling discovery linking their past adventures. What do a rich old man and his nephew have to do with a secret discovered on the farm Devil’s Leap months before? And will the children discover any...

It’s Easter on Devil’s Leap, and after having spent an entire day painting eggs in all variety of shapes and colors, the hunt is on. However, the children find a little more than they had bargained for when it is discovered that one of the eggs they found is made entirely out of gold. What...

Elizabeth Viljoen had a bright future ahead of her. She had just made partner at a prestigious law firm and was on the cusp of getting everything she ever wanted. Then why was her body discarded in such a bizarre setting? Legendary detective Esopus van Tonder, now in the twilight of his career...