Geronimo Stilton: Micekings
middle-grade adventure
Series · adventure fiction
The Tyler Locke series by Boyd Morrison has 4 known books (4 published) and is best read in publication order, starting with The Ark (2010). The latest book with a fully recorded publication date is The Loch Ness Legacy.
Start here: The Ark (2010) — then read straight through in publication order.
The date order of published books and any announced future entries — the default way to read the series.
Boyd Morrison introduced engineer Tyler Locke in The Ark, published in 2010 at 432 pages (as The Noah's Ark Quest in the UK). It pairs a historical mystery around Noah's Ark with a present-day conspiracy, built around genuine engineering problems that reflect Morrison's real doctorate in industrial engineering.
Alternative text for cover: Cover of The ArkA year later, The Vault continued the series in 2011, growing to 450 pages (published in the UK as The Midas Code). It pairs the lost treasure behind an ancient legend with a present-day conspiracy Locke and his Gordian Engineering team must unravel before a well-funded villain gets there first.
Alternative text for cover: Cover of The VaultBy 2012's The Roswell Conspiracy, the series reached its longest volume yet at 498 pages, the third entry. It pairs the Roswell UFO incident with a present-day threat, continuing Tyler Locke's engineering team, including Grant Westfield and Stacy Benedict, into another self-contained historical-mystery adventure.
Alternative text for cover: Cover of The Roswell ConspiracyThe Loch Ness Legacy closed the four-book run in 2013 at 440 pages, shorter than its immediate predecessor. It pairs the Loch Ness monster legend with the present-day conspiracy that closes out Locke's adventures, after which Morrison's attention shifted to the Cussler-adjacent Oregon Files series.
Alternative text for cover: Cover of The Loch Ness LegacyTyler Locke is a structural engineer and former Army combat engineer whose technical expertise — reading blueprints, understanding how buildings and machines actually fail — drives the puzzle-solving at the center of Boyd Morrison's adventure series, introduced in The Ark (2010, published in the UK as The Noah's Ark Quest). Morrison, who holds a real doctorate in industrial engineering, built the character and the series' set pieces around genuine engineering problems rather than generic action-hero competence, giving the books a Clive Cussler-adjacent flavor that made Morrison a natural fit for the Oregon Files collaboration he later joined.
Each novel pairs a historical mystery — Noah's Ark, the lost treasure behind an ancient legend, the Roswell UFO incident, the Loch Ness monster — with a present-day conspiracy that Locke and his team, including engineer Grant Westfield and Gordian Engineering colleague Stacy Benedict, have to unravel before a well-funded villain gets there first. The four novels ran from 2010 to 2013, after which Morrison's attention shifted toward the Cussler-adjacent Oregon Files series (from 2015) and, later, his own Tales of the Lawless Land historical fiction with his sister Beth Morrison. No fifth Tyler Locke novel has followed since The Loch Ness Legacy (2013).
Four, published between 2010 and 2013: The Ark, The Vault, The Roswell Conspiracy, and The Loch Ness Legacy.
Boyd Morrison's UK publisher retitled the first two books -- The Ark became The Noah's Ark Quest, and The Vault became The Midas Code -- while the US editions kept the shorter titles.
Publication order. Each mystery is self-contained, but Locke's team and relationships develop incrementally across the series.
No, it appears to have concluded after The Loch Ness Legacy (2013); Morrison's subsequent work has been the Clive Cussler Oregon Files collaboration and his own Tales of the Lawless Land series.
Yes -- Morrison holds a real doctorate in industrial engineering, and the series' historical mysteries and set pieces are built around genuine engineering and structural problems.
Reading order last verified .