- The Highland Falcon ThiefM. G. Leonard, Sam Sedgman et al.
- Murder on the Safari StarM. G. Leonard, Sam Sedgman et al.
- Kidnap on the California CometM. G. Leonard, Sam Sedgman et al.
- Sabotage on the Solar ExpressM. G. Leonard, Sam Sedgman
- Danger at Dead Man's PassM. G. Leonard, Sam Sedgman et al.
- The Clockwork ConspiracySam Sedgman