Tim All Alone (Little Tim) by Edward Ardizzone (2003-09-19)

What! Lost your parents, have you? said the lady catching hold of Tim by the hand. "Then you must come with me to the home for lost children!" "No, no" said Tim, "I don't want to go." Tim arrives home after a long holiday to discover his parents have vanished. He's determined to search the whole wide world until he has found them .