Anne-Marie Green

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.

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

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

And Swirling says the night Davis died, he let Bud Ackerman's repeated calls and text messages to Meredith get under his skin.

And Swirling says the night Davis died, he let Bud Ackerman's repeated calls and text messages to Meredith get under his skin.

And Swirling says the night Davis died, he let Bud Ackerman's repeated calls and text messages to Meredith get under his skin.

He says Bud had suggested an innocent and safe place for it to happen.

He says Bud had suggested an innocent and safe place for it to happen.