Who?

Needing to economise on texting to keep it under the blankets (literally), Tony decided he must contact his entire mailbox and put them to the test. At this point, he still had no definitive knowledge that Terry hadn't been in the exploding coffin, but, feeling that his twin was still alive, he also felt strongly that someone out there knew exactly where Terry was, and represented a threat. The call from Terry in the church was no electronic glitch. Someone knew. Someone had rigged the coffin bomb to Terry's phone.

It was inconceivable that the someone could be Terry himself!