the casson family series comprises the whitbread award-winning "saffy's angel" (2001) and four sequels: "indigo's star" (2004), "permanent rose" (2005), which was shortlisted for the 2005 whitbread awards, "caddy ever after" (2006), "forever rose" (2007), and prequel "caddy's world" (2011). the series focuses on an english family of artists, the cassons. the children are called cadmium ('caddy'), saffron ('saffy'), indigo ('indy') and permanent rose (rosy pose), and are named after paint colours (a large paint chart that hangs in the casson family's kitchen that plays an important role in the book "saffy's angel".) the parents' names are eve and bill. the first three books are written in the third person but focus on the point of view of the character in the title, whilst "caddy ever after" is written in the first person and is narrated by each of the siblings in turn, and "forever rose" is written in the first person and is narrated by rose. other characters featured in the books include tom (an american boy who makes friends with indigo and rose whilst on a short stay in england), david (a thick-skinned and well-meaning reformed bully) and sarah (or "wheelchair girl", as she was known to the cassons before she met saffron). "caddy's world," a prequel describes a younger caddy when rose was first born.