Husband testifies in au pair murder trial

COURTROOM. THE AN ACCUSED OF KILLING HIS WIFE TOOK. KILLING HIS WIFE TOOK THE STAND IN HIS OWN DEDEFENSE. THE STAND IN HIS OWN DEFENSE. STEPHANIE GOSK HAS. DEFENSE. STEPHANIE GOSK HAS DETAILS. STEPHANIE GOSK HAS DETAILS. >> Reporter: IN A. >> Reporter: IN A VIRGINIA COURT -- TESTIFY TRUTHFULULLY. VIRGINIA COURT -- TESTIFY TRUTHFULLY UNDER PENALTY OF LAW. TESTIFY TRUTHFULLY UNDER PENALTY OF LAW. >> Reporter: ACCUSED. UNDER PENALTY OF LAW. >> Reporter: A ACCUSED KILLER BRENDON. >> Reporter: ACCUSEDED KILLER BRENDON BANFIELD TAKING THE. KILLER BRENDON BANFIELD TAKING THE STAND IN HIS OWN. STAND IN HIS OWN DEFENSE. THEY SAY HE CONSPIRED. DEFENSE. THEY SAY HE CONSPIRED WITHTH THE AU PAIR TO. THEY SAY HE CONSPIRED WITH THE A AU PAIR TO KILL HIS WIFE AND. G. KILL HIS WIFE AND ANOTHER MAN BY LURING HIM TO THE HOUSE WITH. ANOTHER MAN BY LURING HIM TO THE HOUSE WITH A FAKE PROFILE ON A. HIM TO THE HOUSE WITH A FAKE PROFILE ON A FETISH WEBSITE. A FAKE PROFILE ON A FETISH WEBSITE. HE T TOLD THE JURY THAT. FETISH WEBEBSITE. HE TOLD THE JURY THAT NEVER HAPPENED. HE TOLD THE JURY THAT NEVER HAHAPPENED. >> I THINK THAT IT'S.

NEVER HAPPENED. >> I THINK THAT IT'S ABSURD LINE OF. >> I THINK THAT IT'S ABSURD LINE OF QUESTIONING THAT A. ABSURD LINE OF QUESTIONING THAT A PLAN WAS MADE TO GET. QUESTIONING THAT A PLAN WAS MADE TO GET RID OF MY WIFE. PLAN WAS MADE TO GET RID OF MY WIFE. THAT IS ABSOLUTELY. RID OF MY WIFE. THAT IS ABSOLUTELY CRAZY. THAT IS ABSOLUTELY CRAZY. >> Reporter: HE DID. CRAZY. >> Reporter: HE DID ADMIT HE HAD AN AFFAIR. >> Reporter: HE DID ADMIT HE HAD AN AFFAIR WITH THE AU PAIR. WITH THE AU PAIR STARTING SIX MONTHS BEFORE THE ALLEGED. STARTING SIX MONTHS BEFORE THE ALLEGED MURDERS. BEFORE THE ALLEGED MURDERS. ON A NIGHT THAT HIS. ON A NIGHT THAT HIS WIFE AND DAUGHTER WERE IN NEWEW YORK CITY. WIFE AND DAUGHTER WERE IN NEW YORK CITY. >> I DID NOT STOP HER. IN NEW YORK CITY. >> I DID NOT STOP HER ADVANCES. >> I DID NOT STOP HER R ADVANCES. WHEN I WENT UPSTAIRS, ADVANCES. WHEN I WENT UPSTAIRS, SHE CAME WITH ME I INTO.

WHEN I WENT UPSTAIRS, SHE CAME WITH ME INTO MY BEDROOM. SHE CAME WITH ME INTO MY BEDROOM. >> Reporter: HE. MY BEDROOM. >> Reporter: HE TESTIFYING HE TOLD HER. >> Reporter: HE TESTIFYING HE TOLD HER IT WAS JUSUST AN AFFAIR. TESTIFYING HE TOLD HER IT WAS JUST AN AFFAIAIR AND THAT BOTH HE AND. IT WAS JUST AN AFFAIR AND THAT BOTH HE AND HIS WIFE HAD MULTIPLE. AND D THAT BOTH HE AND HIS WIFE HAD MULTIPLE AFFAIRS IN THE PAST. HIS WIFE HAD MULTIPLE AFFAIRS IN THE PAST. PROSECUTORS SAY HE. AFFAIRS IN THE PAST. PROSECUTORORS SAY HE CAME UP WITH THE. PROSECUTORS S SAY HE CAME UP WITH THE SCHEME TO KILL HIS. SCHEME TO KILL HIS WIFE SO HE COULD START A NEW LIFE W WITH THE AU. WIFE SO HE COULD START A NEW LIFE WITH THE AU PAIR. A NEW LIFE WITH THTHE AU PAIR. SHE PLEADED GUILTY TO. PAIR. SHE PLEADED GUILTY TO MANSLAUGHTER AND. MANSLAUGHTER AND TESTIFIED FOR THE PROSECUTION THAT THERE. TESTIFIED FOR THE PROSECUTION THAT THERE WAS A PLPLAN TO KILL. PROSECUTION THAT THERE WAS A PLAN TO KILL CHRISTINE. WAS A PLAN TO KILL CHRISTINE. >> DID HE TELL YOU. >> DID HE TELL YOU WHAT HE WANTED TO DODO? >> YES. WHAT HE WANTED TO DO? >> YES. >> WHAT DID HE SAYAY?

>> YES. >> WHAT DID HE SAY? >> HE MENTIONED HIS. >> WHAT DID HE SAY? >> HE MENTIONED HIS PLAN TO GET RIRID OF. >> HE MENTIONED HIS PLAN TO GET RID OF HER. PLAN TO GET RID D OF HER. >> Reporter: LEGAL. HE. >> Reporter: LEGAL EXPERTS SAY TAKING T THE STAND COULD BE RISKY. EXPERTS SAY TAKING THE STAND COULD BE RISISKY FOR A DEFENDANT. STAND COULD BE R RISKY FOR A DEFENDANT. IT'S ALSO A CHANCE FOR.