Danger Island (Spy Pups Book 4) by Andrew Cope (Paperback, 2011)

Spy Pups Danger Island by Andrew Cope is the awesome follow-on series to bestselling Spy Dogs! SPUD he's scatty and accident-prone - but good with the gadgets. STAR she's super-smart and ready to pounce... 
Together they're SPY PUPS, following hot in the paw prints of mum, LARA (that's Licensed Assault and Rescue Animal to you).
Beaches up and down Britain are in terrible danger. A greedy trickster is polluting the seas - soon there'll be nowhere safe to swim. But, when SPUD discovers a mysterious underground secret, only he and STAR can save the day - and the seaside!

Publisher ‏ : ‎ Puffin
Publication date ‏ : ‎ 3 Mar. 2011
Language ‏ : ‎ English
Paperback ‏ : ‎ 160 pages
ISBN ‏ : ‎ 9780141326061
Reading age ‏ : ‎ 7 - 9 years
Dimensions ‏ : ‎ 12.8 x 1 x 19.7 cm
Book 4 of 6  :  Spy Pups