Anne-Marie Green

They say Ackerman hit the brakes hard.

And according to the computer, seconds after the collision, Ackerman's truck had stopped.

And according to the computer, seconds after the collision, Ackerman's truck had stopped.

And according to the computer, seconds after the collision, Ackerman's truck had stopped.

Womack thinks Ackerman got out of his truck, which was probably leaking from the collision. Remember that puddle of oil in the road near the victim.

Womack thinks Ackerman got out of his truck, which was probably leaking from the collision. Remember that puddle of oil in the road near the victim.

Womack thinks Ackerman got out of his truck, which was probably leaking from the collision. Remember that puddle of oil in the road near the victim.

Then, say authorities, Ackerman turns his truck around near the lamppost, roughly as you see in this CBS News demonstration based on their investigation. He then drives away, leaking an oil trail all the way to his parents' driveway.

Then, say authorities, Ackerman turns his truck around near the lamppost, roughly as you see in this CBS News demonstration based on their investigation. He then drives away, leaking an oil trail all the way to his parents' driveway.

Then, say authorities, Ackerman turns his truck around near the lamppost, roughly as you see in this CBS News demonstration based on their investigation. He then drives away, leaking an oil trail all the way to his parents' driveway.

But Ackerman's attorney, Jack Swirling, paints a different picture.

But Ackerman's attorney, Jack Swirling, paints a different picture.

But Ackerman's attorney, Jack Swirling, paints a different picture.

Sheriff's office. Yes, sir. Nor, says Swirling, is there much to indicate his client was drunk that night. Can I get you to step with me over here for a moment, please? None of the cops who arrested him reported he seemed tipsy.

Sheriff's office. Yes, sir. Nor, says Swirling, is there much to indicate his client was drunk that night. Can I get you to step with me over here for a moment, please? None of the cops who arrested him reported he seemed tipsy.

Sheriff's office. Yes, sir. Nor, says Swirling, is there much to indicate his client was drunk that night. Can I get you to step with me over here for a moment, please? None of the cops who arrested him reported he seemed tipsy.

Was he stalking them that night?

Was he stalking them that night?

Was he stalking them that night?

According to Swirling, Meredith and Davis had betrayed McClendon's promise to Bud to stand down until the Ackermans' marriage was officially over.