The doorbell rang through the silence of the night, breaking the stillness inside Alex’s penthouse.

Isis was coming from the bedroom, still fixing her hair, puzzled. She wasn’t expecting anyone. Duck, who had been lying on the living room rug, immediately lifted his head and began barking.

“Hey, big guy...” she murmured, watching the dog grow agitated. “Judging by your reaction, you know who’s here.”

She walked to the door and opened it.

“Mother-in-law?” she asked in surprise. “Why didn’t you c