known ▁to ▁fans ▁as ▁" the ▁Pat ern oster ▁Gang ") ▁were ▁due ▁to ▁return ▁in ▁the ▁series ▁premi ere ▁" De ep ▁Bre ath ". ▁On ▁ 2 4 ▁February ▁ 2 0 1 4 , ▁it ▁was ▁announced ▁that ▁G av in ▁& ▁St ace y ▁actor ▁Samuel ▁Anderson ▁will ▁join ▁the ▁cast ▁as ▁the ▁rec urr ing ▁character ▁D anny ▁P ink , ▁a ▁teacher ▁and ▁Clara ' s ▁colle ague ▁at ▁Co al ▁Hill ▁School . ▁ ▁Bey ond ▁the ▁return ▁of ▁the ▁Pat ern oster ▁Gang , ▁and ▁the ▁casting ▁of ▁Samuel ▁Anderson , ▁the ▁first ▁major ▁guest ▁star ▁of ▁the ▁series ▁was ▁announced ▁in ▁March ▁ 2 0 1 4 ▁when ▁it ▁was ▁revealed ▁that ▁K ee ley ▁Haw es ▁had ▁been ▁cast ▁in ▁episode ▁five ▁as ▁a ▁character ▁named ▁M s . ▁Del ph ox . ▁Sub sequently , ▁Tom ▁R iley , ▁Ben ▁Miller , ▁Herm ione ▁Nor ris , ▁Frank ▁Sk inner , ▁Fox es , ▁Christopher ▁Fair bank , ▁San je ev ▁Bh ask ar , ▁and ▁Chris ▁Add ison ▁were ▁cast ▁in ▁guest ▁roles . ▁ ▁J em ma ▁Red gra ve ▁and ▁In grid ▁Oliver ▁repr ised ▁their ▁roles ▁of ▁Kate ▁Stewart ▁and ▁Os good , ▁respectively , ▁last ▁seen ▁in ▁the ▁f ift i eth ▁anni versary ▁special ▁" The ▁Day ▁of ▁the ▁Doctor ", ▁in ▁the ▁two - part ▁series ▁final ▁" D ark ▁Water " ▁/ ▁" De ath ▁in ▁Heaven ". ▁Mich elle ▁G ome z ▁was