The Missing: Books 1,2,3

"The Missing"  series by Margaret Peterson Haddix
(also the author of Book 10 of 39 Clues!)

In Book One: Found, we meet Jonah, his sister Katherine, and Chip, who have received mysterious letters telling them they are each one of the missing, and that someone is coming to get them.  Together they face the dangers of a smuggling operation, the FBI, and time travel. In Book Two: Sent, the friends  find out that they were kidnapped from different historical periods and experience time travel and the dangers of fifteenth century English royal intrigue. In Book Three: Sabotaged, the adventurers find themselves involved in another historical mystery; this time in the sixteenth century. Book Three was chosen as a Junior Library Guild Selection and the author has won numerous awards for her other adventure and mystery series. Can't keep this series on my shelf!

The Missing
Book One: Found.   978-0-545-11645-9
Book Two: Sent.   978-1-4424-0767-1        
Book Three: Sabotaged.     978-0-545-29007-4