This broad heading includes preta i.e., spirits of the dead, pishacha, rakashasas or demons, black magic etc. To identify preta badha, Lagna, Lagna lord, Arudha or Arudha Lord must have a correlation with the sixth house or sixth lord, Mars, Saturn and Ketu.
Badhak house and Badhakapati:
In movable Lagna eleventh house in Badhak, in fixed Lagna ninth house is Badhak, in dual Lagna seventh house is Badhak and the lord of that sign is Badhakapati.
The most important indication is the involvement of Mandi in finding Preta Badha:
Afflicted Mandi in the Badhaksthan, houses sixth, eighth and twelfth house or in Trikonas afflicting the Purva punyas causes preta badha. Mandi’s association with different planets indicates the kind of evil spirits and their causes i.e., soul becoming a preta or an evil spirit due to unnatural tragic death or due to deficiencies in proper ceremonies of cremation.
If Mandi is posited in the sign or Navamsa of Mars, the person must have died an unnatural death in the past life. Mandi’s association with Saturn would have caused death due to poverty and suffering. Mandi and Rahu would have caused death due to poverty and suffering. Mandi and Rahu would have caused death due to poisoning or snake bite. Mandi afflicted in a watery sign would have caused death by drowning. Mandi associated with benefic planets would have caused natural death in the past life whereas the association with malefic an unnatural death.
The sex in the past life is determined by Mandi’s placement in odd or even sign or Navamsha, where the odd sign shows a male and even sign a female in the past life. Mandi in a movable sign means that the person died long ago and in a fixed sign recently. Mandi in the fourth house or with the fourth lord points towards preta connected with the family or household.
The age at which the person died is determined from the degrees of Mandi, initial degrees indicating infant and rising degrees indicating advanced age. The age is also seen from the lord of the house occupied by Mandi, in a similar way. Moon also indicates age as per general principles of Vedic astrology i.e., Moon in initial tithis in Shukla paksha denoting Baal avastha and so on. Caste of the preta in his previous birth is seen from the sign and lord of the sign occupied by the Mandi.