Title in This Set: 1. Twitch 2. Spark 3. Clutch 4. Feather Description: Twitch Twitch has three pet chickens, four pigeons, swallows nesting in his bedroom and a passion for birdwatching. On the first day of the summer holidays, he arrives at his secret hide to find police everywhere: a convicted robber has broken out of prison and is hiding in Aves Wood. Can Twitch use his talents for birdwatching to hunt for the dangerous prisoner and find the missing loot? Spark When Jack rescues a wounded cat, he quickly suspects foul play. Could there be a wildlife criminal on the loose in Briddvale? Jack rushes to investigate, determined to catch the culprit, only to stumble into a deepening mystery and a sinister criminal plot. Can Jack and The Twitchers stop the villains before it's too late? Clutch When the peregrine falcon nest is raided, Twitch realizes a thief is at work. Horrified, he and the Twitchers set out to catch the dangerous criminal, only to be ensnared in a deadly trap. Can they save themselves and stop the villain before anyone gets hurt? Feather On a school trip to the Royal Swan Natural History Museum, Ava finds herself at the centre of a heist: hundreds of invaluable bird of paradise skins from the Alfred Wallace Collection have been stolen! When she discovers a large jet-black feather, she's sure it's a clue, but the police won't listen to her. Slipping away, she takes the case to the Twitchers in an investigation that leads them to the bizarre and sinister world of fly-fishing, and to a mysterious girl with a pet Raven called Caliban and a dangerous ring of thieves and smugglers...