Sam has written more than thirty books including the UNDEAD PETS series published by Stripes, the STELLA & THE NIGHT SPRITES series published by Scholastic Branches, the SCREAMING SANDS trilogy published by Catnip, picture book DO NOT WASH THIS BEAR published by Egmont, and BUMBLE THE BRAVE KITTEN published by Macmillan. Sam was longlisted for the UKLA award for her 2009 novel BILLY ANGEL, published by A&C Black/Bloomsbury. Sam's picture book STAR IN THE JAR, illustrated by Sarah Massini, published in January 2018.

Sam is a passionate advocate of improving literacy in schools. She runs several book groups for primary school children, challenging, inspiring and supporting creative writing and a love of reading.

Helen and has a degree in Graphic Arts from Liverpool John Moores University and a Masters in Illustration for Children from the North East Wales School of Art. Helen lives and works in the North West of England with her partner and two young children and when she's not drawing she's planning adventurous family days out and cosy nights in.