Harry Potter and the Philosopher’s Stone by JK Rowling
It’s a cliché option, but one that requires inclusion. My cousin Craig gave me both the first and fourth installments of the Harry Potter series when I visited as a kid, and I remember getting stuck into Philosopher’s Stone the minute I got in the car to go home. It is one of my absolute favourite books and I can easily read it in one sitting – I don’t need to tell anyone how addictive and spellbinding (pun intended) the Harry Potter series is, and also sparked one of my best friends at primary school to get into reading after seeing me read my battered copy in Year 3 across the classroom.