10-year-old Freddy Spicer writes letters to his parents - who he believes are working at a Brussels-sprouts farm in Outer Castonga, without internet or phone access.
In fact, Freddy's parents are secret agents out of the country on a highly classified mission – but Freddy has NO IDEA!
Throw in:
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Grandad’s X-Ray specs;
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A laser blaster that accidentally destroys the shed;
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A strange new neighbour flirting with grandad; and
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Suspicious goings-on at school...