If there is only one book you read the rest of the summer, make it investigative journalist Paul Sperry’s Infiltration.

Paul has been working the Pakistani-al Qaeda angle that is now the subject of renewed interest in the wake of the 7/7 terrorist attacks.

Read this May 2005 report from Sperry–It’s Pakistan, stupid!–for a quick crash course. Excerpt:

Internal Department of Homeland Security documents I’ve obtained show officials fear Pakistan-based al-Qaida may be sending terrorists our way, including ones trained in terror camps up and running inside Pakistan — that’s right, Pakistan. The terror-training camps we shut down in Afghanistan are now open for business on the other side of the border, despite Islamabad’s apparent efforts to crack down on them.

According to the closely held intelligence bulletins, officials worry Pakistanis trained in the camps are trying to sneak into America to carry out terrorist attacks. In fact, U.S. border authorities are reminded each day in shift musters that Pakistanis pose the No. 1 terrorist threat to America right now. And for the past several months, they have been under orders to increase scrutiny of travelers of Pakistani origin.

The latest advisory puts authorities on high alert for Pakistani terrorists trying to enter the U.S. with fake British passports.

“A number of Pakistani-based young men in their 20′s may be traveling to the U.S. with altered United Kingdom passports in order to engage in terrorist-related activity,” says the highly sensitive DHS action memo.

“Of most interest may be individuals fitting this description traveling to Washington D.C., Houston, Chicago or New York.”

Flashbacks: Pakistani travelers under new scrutiny
Homeland insecurity files

You’ll be hearing more about this from the MSM in days to come, but go to Paul’s website first for the original reporting. He has posted a treasure trove of supporting memos and documents that will–and should–keep you up at night.

An appetizer below the jump: