
BBC Horizon ran a one-hour "Goodbye Cassini - Hello Saturn" programme after the end of mission. My Big Boss takes up most of the second half of it, describing how the magnetometer discovered the plume activity at Enceladus.
If you're wondering who the woman in the purple shirt and glasses that she hugs at the end of mission event during the very last minute of the programme, can confirm that was me (see screencap above). That was shot about a minute after the loss of signal. :/
You can catch the Horizon programme on iPlayer if you missed it here.