- "Too Tall for the Seesaw" (1992)
- "Valkoinen rotta" (1993)
- "The Night Flyers" (1994)
- "Just kuten kaikki muut" (1995)
- "Blue Genes" (1996)
- "Damian Spinellin salainen elämä" (1997)
- "The Ruby Princess" (1998)
- "The Diamond Queen" (1999)
- "The Emerald Enchantress" (2000)
- "The Sapphire Goddess" (2001)
- "Ametisti keisarinna" (2002)
- "The Topaz Temptress" (2003)
- "The Garnet Guardian" (2004)
- "The Onyx Oracle" (2005)
- "The Pearl Priestess" (2006)
- "Jade Jaguar" (2007)
- "The Opal Obsession" (2008)
- "The Peridot Prophecy" (2009)
- "The Aquamarine Affliction" (2010)
- "The Tansanite Temptation" (2011)
- "The Tourmaline Torment" (2012)
- "The Citrine Curse" (2013)
- "The Malachite Misfortune" (2014)
- "The Morganite Madness" (2015)
- "The Kunzite Kaos" (2016)
- "The Iolite Illusion" (2017)
- "The Aventurine Adventure" (2018)
- "The Labradorite Legacy" (2019)
- "The Sunstone Secret" (2020)
- "The Moonstone Mystery" (2021)
Novellit:
- "The Case of the Missing Cookie Jar" (1994)
- "Varastetun Petunian tapaus" (1995)
- "Katoavan koiran tapaus" (1996)
- "The Case of the Phantom Piano Player" (1997)
- "Salaperäisen viestin tapaus" (1998)
- "The Case of the Haunted House" (1999)
- "Salaisen huoneen tapaus" (2000)
- "Aikamatkailijan tapaus" (2001)
- "The Case of the Magic Spell" (2002)
- "Supersankarin tapaus" (2003)
- "The Case of the Alien Invasion" (2004)
- "The Case of the Robot Rebellion" (2005)
- "The Case of the Dinosaur Revival" (2006)
- "The Case of the Lost City of Atlantis" (2007)
- "The Case of the Yeti Encounter" (2008)
- "The Case of the Loch Ness Monster" (2009)
- "The Case of the Bigfoot Sighting" (2010)
- "The Case of the UFO Abduction" (2011)
- "Bermudan kolmion tapaus" (2012)
- "The Case of the Crop Circles" (2013)
- "Stonehengen mysteerin tapaus" (2014)
- "The Case of the Nazca Lines" (2015)
- "Pääsiäissaaren patsaiden tapaus" (2016)
- "Kiinan muurin tapaus" (2017)
- "Chichén Itzá Pyramidin tapaus" (2018)
- "Machu Picchun raunioiden tapaus" (2019)
- "Angkor Watin temppelin tapaus" (2020)
- "Petran valtiovarainministeriön tapaus" (2021)