Alex Rider: Secret Weapon : Seven Untold Adventures From The Life Of A Teenaged Spy Alex Rider Series Short Story Collection by Anthony Horowitz Copyright Year: 2019 ISBN-13: 9781524739331 Video Preview Available format(s): VOICEText (H) Log in to read What's an Audio Format Audio format refers to the way an audiobook is recorded. Not all audiobooks have the same formats. Classic Audio: A human reading an audiobook without the text displayed. VOICEtext (H): Human narrator with text that you can follow along with as it reads. VOICEtext (S): Synthetic voice with text you can follow along with as it reads.