Topics and Guests for July 12

Watch "The Big Story" weekdays at 5 p.m. ET

Getting ready for lift-off! We'll have a special preview of the Discovery (search) shuttle launch. Are all systems a go? Don't miss this edition of "The Big Story."

A major break for police in the London terror attacks: Investigators say they've linked four men to the four bombs that tore through London's transit system. Police also arrested a suspect in connection with the deadly blasts. Greg Esslinger, former FBI special agent in counter-terrorism, weighs in on the latest break in the London attacks.

The White House is still keeping quiet about Karl Rove's (search) possible role in leaking the name of a CIA operative. If Rove is the leak, did he break any laws? We'll ask former U.S. Attorney Joe Digenova and former Department of Justice official Victoria Toensing.

Then, does America care about the Rove controversy? And, if so, is the White House prepared to take a hit? We'll get a fair and balanced debate from former Rep. Martin Frost, D-Texas, and Terry Holt, former senior advisor to the Republican National Committee.

And, British investigators believe the bombs detonated in the London attacks were of "military quality." So how did the terrorists get their hands on high-grade explosives? Retired U.S. Army Maj. Gen. Robert Scales, FOX News military analyst, weighs in.

Plus, how are police able to identify what, if anything, remains of suicide bombers? We'll get the lowdown from forensic scientist Dr. Larry Kobilinsky, a professor at John Jay College of Criminal Justice.

Real journalism: fair and balanced. That's why we're No. 1 — FOX News Channel.

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Veteran newscaster John Gibson gets to the core of the most salient issues facing America today as host of FNC's hard-hitting primetime show "The Big Story with John Gibson."

Airing Monday through Friday at 5 p.m. ET, "The Big Story" gives you expert legal analysis from Judge Andrew Napolitano.

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Note: All guests and topics subject to change