Ek Oankar Wahiguru Ji Ki Fateh Here das is starting a bit tricky debate,what Sangat as general feels about ghosts or evil spirits or there concept viz a viz Sikhism. Das wants to say often a misdeed of person and resultant weak will power cause the possision by 'Ghost' or often it could be a mental ailment. But as per Das Only but Akal exist in all universe as Univers is the manifestation of Akal. Yet like souls with body exist so do souls without body do exists. So it is in Gurbani Kai Kot Jachh Kinnar Pishach, Kai kot Bhot Pret Sukar Mrigach moderator/Admin Kindly edit if verse is not coreectly written Kai mean many kot mean crorre ie 10 millions Jachh is slang from Yaksha a type of human like entity(refered as human only in Akalustat) They could be native of Sri Lanka before Sinhalees from north India sttled there. Kinnar are men from high mountain from Kinnaour of Himachal Pradesh(both are refered in hindu mythology also as semi or full divine man like creatures). Pishach is a type of Ghost ,which is vampire Bhot and pret both are used for ghost. Prest could be a ghost never been in human body while bhoot is ghost at least been born as human or may be other body and yet to be salvaged. Suker is pig. Mrig is deer. Mrigach stand for what Das ask you for it. But as per das Ghost do exist.And they posses the one who are devoid of faith in Akal. As there mind or brain is empty of Akal so those humans are always in bad frame of mind. So dead or evil spirits occupy that empty place and try to use that body for fullfiling their unfullfilled desires(during there life,They still could not get salvation because they are yet to come out of earthly desires). (Das is reapeating some things as said by Giani Sant Singh Ji Maskeen in one of his casatte). Das awaits your views on it. And on ghost busters in Sikhism like Baba Vadbhag Singh Ji 's school. Das agrees to one more plus point of Baba Vadbhag Singh Ji' school of Thought. Shaster Vidiya ustad of Das in Delhi have some devotion towrads that mentality and That ustad is so far succesfull to reconvert patit back to Sikh swaroop. Also das knows a family of hindus ,who were Radha Swamis but this cult could not solve there super natural problem but Baba Vadhbhag Singh Ji'scool did solve it.So they have left Radh Swamis and are adhereing to Sikh and Pro Guru Granth Sahib Ji school of Baba Vadhbhag Singh Ji. Das has intentionally choosen this rather a contrvertial topic but in day to day practicle life Sikhs do encoounter such problems related to 'Ghosts'. Das is just inviting the views of learned Sikhs on this issue so that there knowledge can be used in future for the welfare of mankind. Akal may help us.Akal is only who help all.