Map piece

One of the clues to the murder of Augustus Darcy is a map of London marked with mysterious symbols and lines. The map has been cut into sections and circles have been cut out of the various sections. At the centre of the circles is a tube station and on each circle is a mysterious symbol.

Two types of circle have been discovered so far. One type bears a phrase from The Enochian Calls used by Dr Dee and later Aleister Crowley (who appears in the Liber Fumo. These are a sequence of angelic summonings which refer to cataclysms and a day of judgement. The others bear the name of an Aethyr, angelic presences mentioned in much of Crowley's writing and particularly Liber 418. The list of each Call and Aethyr is below, there are 18 Calls or Keys and 30 Aethyr.

Enochian Calls

First Call	Seventh Call	Thirteenth Call
Second Call	Eighth Call	Fourteenth Call
Third Call	Ninth Call	Fifteenth Call
Fourth Call	Tenth Call	Sixteenth Call
Fifth Call	Eleventh Call	Seventeenth Call
Sixth Call	Twelth Call	Eighteenth Call

Aethyrs

1. LIL	6. MAZ	11. ICH	16. LEA	21. ASP	26. DES
2. ARN	7. DEO	12. LOE	17. TAN	22. LIN	27. ZAA
3. ZOM	8. ZID	13. ZIM	18. ZEN	23. TOR	28. BAG
4. PAZ	9. ZIP	14. VTA	19. POP	24. NIA	29. RII
5. LAT	10. ZAX	15. OXO	20. CHR	25. VTI	30. TEX