A An astronaut
B Burning a bridge
C Cup in the cupboard
D Danger Delilah
E An enigma
F Forever
G Guarding things
H Half a house
I The inventor
J Jelly door
K The king
L The lumberjack's light
M Made of matter
N Nearly nine thousand
O Onward
P A puzzled parsnip
Q The missing question
R Robots don't like rainclouds
S Sink or swim
T The terrible typewriter
U Underground
V Victor the vanquished
W The whiraffe
X The case of the missing x-ray spectacles
Y A yeti, a yak and a yo-yo
Z Zeppelin.