Echo 3

A scientist goes missing near the Colombia–Venezuela border, and the two men determined to find her are her husband and her brother. Both have military experience; that does not mean they agree about what to do. Echo 3 uses their relationship to complicate a familiar rescue premise.

Luke Evans and Michiel Huisman give the partnership tension, while Jessica Ann Collins's Amber needs to register as a person rather than simply the reason for the mission. The more the series stays with those different experiences, the more involving it becomes.

The pace is uneven. It has convincing physical urgency in places, but the middle stretch asks for patience that a straightforward action thriller might not demand. The setting and shifting interests also resist an easy division into rescuers and obstacles.

This is worth considering if you want a serious, drawn-out rescue drama rather than constant action. The Terminal List offers another military-led thriller with a personal motive; Echo 3 spends more time on the difficult partnership carrying the search.