The Connecticut man facing charges in a criminal case relating to the disappearance of his estranged wife and mother of five -- Jennifer Farber Dulos -- took the stand in a separate civil case on Tuesday.
Fotis Dulos appeared in a Hartford court in a civil trial.
He was sued by his former mother-in-law, Gloria Farber, 18 months before Jennifer Farber Dulos disappeared.
The trial focused on whether he owes the estate of his missing wife's late father some $2.5 million in what the plaintiff says were "loan" payments, according to a CBS report.
Dulos said the money, which reportedly helped finance his luxury home building business, was a "gift." His words will be under scrutiny in this civil suit open to the public, as questions remained unanswered as to how and why his wife went missing on May 24.
He faces charges of tampering with evidence and hindering prosecution in the criminal case against him, local media reported.