Book 1

La Invasion

by Katherine A Applegate

Published 1 January 1996

Book 2

Visitor

by Katherine A Applegate

Published 1 June 1996

Book 3

The Encounter

by Katherine A Applegate

Published 1 August 1996

Book 4

Message

by Katherine A Applegate

Published 1 October 1996

Book 5

The Predator

by Katherine A Applegate

Published 1 December 1996

Book 6

Capture

by Katherine A Applegate

Published 1 February 1997

Book 8

Alien

by Katherine A Applegate

Published 1 July 1997

Book 8

The Alien

by Katherine A Applegate

Published 1 September 2012

Book 9

Secret

by Katherine A Applegate

Published 1 August 1997

Book 10

The Android

by Katherine A Applegate

Published 1 September 1997

Book 11

Forgotten

by Katherine A Applegate

Published 1 October 1997

Book 12

Reaction

by Katherine A Applegate

Published 1 November 1997

Book 13

Change

by Katherine A Applegate and Kroto

Published 1 December 1997

Book 14

Unknown

by Katherine A Applegate

Published 1 January 1998

Book 15

The Escape

by Katherine A Applegate

Published 1 February 1998

Book 16

Warning

by Katherine A Applegate

Published 1 March 1998

Book 17

Underground

by Katherine A Applegate

Published 1 April 1998

Book 18


Book 18

Decision

by Katherine A Applegate and Kreisel

Published 1 May 1998

Book 19

Departure

by Katherine A Applegate and Jeff Robbins

Published 1 July 1998