Magisterium
Black, Holly & Clare, Cassandra:
Rautakoe.
Magisterium 1.
(The Iron Trial, 2014).
Black, Holly & Clare, Cassandra:
Kuparikoura.
Magisterium 2.
(The Copper Gauntlet, 2015).
Black, Holly & Clare, Cassandra:
Pronssiavain.
Magisterium 3.
(The Bronze Key, 2016).
Black, Holly & Clare, Cassandra:
Hopeanaamio.
Magisterium 4.
(The Silver Mask, 2017).
Black, Holly & Clare, Cassandra:
Kultainen torni.
Magisterium 5.
(The Golden Tower, 2018).