Clifford tried contacting Andrew's phone but he was not answering. That's why they assumed that Andrew and Alveena were both abducted.
Since this also involved Andrew, Clifford contacted Tristan using Bianca's phone, informing him about the current situation.
Fortunately, Tristan was able to answer the phone right away. They had just finished having dinner. Tristan was surprised when he heard Clifford from the other line.
Clifford: "Tristan! This is Clifford. Please listen to me. This is an emergency. My sister, Alveena, and your brother, Andrew are abducted! Bianca and I are tracking and following their location right now."
Tristan's eyes widened after hearing that. He didn't expect that bad things kept on happening. This afternoon his wife was involved in a vehicular accident and now his brother and Alveena were abducted.
