Aviva Klompas
Before he was abducted, Keith Siegel had been working as a pharmaceutical sales rep for the Danish company Lundbeck. Following his kidnapping, Lundbeck hired a specialist in locating missing persons, a former operative of the British intelligence agency MI6, who arrived in Tel Aviv and operated in Gaza with a mandate to negotiate with Siegel's captors. However, his efforts were unsuccessful, and after about three months of activity, the agent's mission was terminated. Link to story below.