The Retreat Subclass_Planes & Helicopters is the second of a

is the second of a two-book series specially written to serve as a mathematics companion for primary 6 pupils as they prepare for PSLE Mathematics Examination

on a subway platform for months

how to make the world's roundest football

outwardly urban but quintessentially rural

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The Retreat Subclass_Planes & Helicopters is the second of aThey couldn't wait to stay here. An idyllic wellness retreat has opened on an island off the coast of Devon, promising rest and relaxation but the island itself, known locally as Reaper's Rock, has a dark past. Once the playground of a serial killer, it's rumored to be cursed. But now they can't leave. A woman is found dead below the yoga pavilion in what seems to be a tragic fall. But DS Elin Warner soon learns that the victim wasn't a guest she