Seasonnineoflong-runningBritishspythriller"MI-5"openswithRos’(HermioneNorris)funeral,whereHarry(PeterFirth)learnsofashockingbetrayalatthehighestlevel.Alsothisseason,theagentsgoafterSomaliterroristHusseinAbib(PeterBankole),ascandaloussecretfromLucas’(RichardArmitage)pastisunveiled,andagrowingbonddevelopsbetweenRuthandHarry.SophiaMylesandMaxBrownjointhecastasagentsBethBaileyandDimitriLevendis.