Five LEGO Icons Sherlock Holmes: Book Nook mysteries you may have missed

LEGO Icons 10351 Sherlock Holmes: Book Nook is packed with mysterious details and here are five clues that might go undetected.

The LEGO Group officially revealed 10351 Sherlock Holmes: Book Nook yesterday, a 1,359-piece set due to launch on June 1, 2025. Based on the adventures of Sir Arthur Conan Doyle’s iconic great detective, the LEGO Icons model can be opened up to reveal a detailed London street scene, complete with five minifigures.

As befits its subject matter, 10351 Sherlock Holmes: Book Nook is also packed with plenty of nods to its literary source material, with mysterious clues dotted throughout the build. Grab your deerstalker and magnifying glass and join Brick Fanatics as we delve into what’s hidden within the LEGO Icons build.

1 – Map of London

Pulling open one of the first floor window sections of 10351 Sherlock Holmes: Book Nook reveals a clue board with all manner of mysteries on it. Going clockwise around the map of London we can spot the Hound of the Baskervilles, a letter denoting The Sign of Four, the word ‘Rache’, German for ‘Revenge’ and a reference to A Study in Scarlet, plus the famous Blue Carbuncle gemstone.

Also to be found on the clue board is picture of Irene Adler, with a minifigure of the enigmatic character included in the LEGO Icons set, as well as a drawing of several stick figures from The Adventures of the Dancing Men, as well as a red herring, a sly reference to a misleading or false clue.

2 – Reichenbach Falls

Next to the clue board is a painting of the Reichenbach Falls, the location from The Final Problem where Sherlock Holmes and Moriarty supposedly had their last confrontation. However, Sir Arthur Conan Doyle begrudgingly brought the villain back later in further stories, although his disappearance at this point is reflected in a newspaper front cover included in the set.

3 – Violin

In the original novels, Holmes is known for being a skilled violin player, as noted by the element’s inclusion in the LEGO Icons set. The detective’s instrument was a highly-sought after Stradivarius, although the LEGO piece is decidedly less expensive.

4 – Elementary Book Shop

Heading outside Holmes’ room to the opened up 10351 Sherlock Holmes: Book Nook street reveals the Elementary Book Shop on the left-hand side of the model. The name of the store of course refers to the great detective’s oft-used catchphrase, but the location holds a few more secrets.

The curved window display of the Elementary Book Shop can be rotated, revealing a small, printed element with a dog’s paw on it. This is yet another nod to the Hound of the Baskervilles, with the clue leading to Holmes ultimately solving the mystery.

5 – Colonel Moran

Above the Elementary Book Shop can be found three windows with flower boxes. Inside one of the frames is a black minifigure head, highlighted in an official Instagram ad for 10351 Sherlock Holmes: Book Nook that mentions ‘Colonel Moran’.

Both are subtle references to The Adventure of the Empty House, with Moran said to be the 'second most dangerous man in London' and Moriarty’s chief of staff. In the story, the arch villain instructs Moran to assassinate Holmes from the first floor of a building opposite 221B Baker Street, with the closed 10351 Sherlock Holmes: Book Nook coincidentally causing the two locations to face each other.

You’ll be able to investigate all of 10351 Sherlock Holmes: Book Nook’s mysteries when it’s released on June 1, priced at £109.99 / $129.99 / €119.99, with the pre-orders for the LEGO Icons set now open.

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