Another Woman's Son (Harlequin Romance) by Anna Adams

Whose baby is he?

Three months ago, Isabel Baker's life came crashing down after her husband confessed he'd fallen in love with another woman - her sister - and that they'd had a child together.

Then tragedy strikes, and Isabel's sister and husband are killed, leaving baby Tony with just her sister's husband, Ben. Now Isabel is faced with a terrible decision. Telling the truth would mean taking Tony from the only father he's ever known, but how can she possibly lie?

She's shocked to discover that Ben doesn't have any such qualms. He's determined to keep what remains of his family intact - no matter what. Which is why he's trying to convince Isabel that together they could make the perfect parents for Tony... .