Play the Spying Game to crack the code used by Mary, Queen of Scots.
Learn all about codes with Encryption for Kids.
With a fine paint brush or cotton bud, write your message on paper using milk or lemon juice and let it dry and become invisible. To read the secret message, you have to heat up the page. You can do this by ironing the page, or by putting the paper in a warm oven for a few minutes. Be careful the paper does not catch alight!
Free online workshop from author SD Brown aka Spike Brown. Click here.
The London Eye Mystery by 
The Billionaire's Curse by 
Framed by 
Shakespeare's Secret by 
The Mystery of the Scarlet Rose by 
Mystery at Midnight by 
Aldo Moon and the Ghost at Gravewood Hall by 
The Mystery of the Missing Necklace by 
Mistakes WEre Made: Timmy Failure by 
The Magnificent Lizzie Brown and the Phantom by 
The End of the World by 
The Clue of the Gold Doubloons by 
The Secret Box by 
Murder Most Unladylike by 
Escape from Mr Lemoncello's Library by 
The Mysterious Benedict Society by 
Assassin (Lady Grace Mysteries 1) by 
Withering by Sea by 