Five more cases have been lodged to challenge the British government's controversial Legacy Bill which ends all civil and criminal investigations into the Troubles.
Preliminary hearings will be heard in Belfast's High Court next week.
They bring to 11 the number of such cases now before the courts.
The bill has completed its legislative passage and now just needs Royal Assent to become law.
All five families fear the bill will end legal cases they have already taken, or shut down the prospect of future convictions.
William Campbell's brother Tony was shot dead by the British Army in February 1973. He was one of six men killed in the New Lodge on consecutive days in separate incidents involving loyalists and soldiers.
Fresh inquests have been ordered into his and the other deaths, but Mr Campbell believes the legacy bill will prevent them taking place.
Liam Shannon is one of the so-called Hooded Men, detained and subjected to harrowing interrogation techniques by the British Army during internment in 1971.
In 2021, the UK Supreme Court found that the methods including sleep deprivation, being hooded and placed for long periods in a stress position amounted to torture by today's standards.
Mr Shannon believes the bill will prevent anyone being held responsible for his treatment.
Gemma Gilvary's brother Maurice was abducted, interrogated and shot dead by the IRA in in January 1981 for alleged informing. She claims state agents or informers were protected and wants a proper investigation.
Mary Braniff is taking a case on behalf of Anthony Braniff who was also murdered by the IRA for alleged informing.
His case is one of a number investigated by Jon Boutcher looking into the activities of army double agent and IRA man Fred Scappaticci, also known as Stakeknife, who headed up a unit hunting informers.
The case file has been sent to the PPS and she believes the bill will close down a decision on whether there should be prosecutions in the case.
Margaret Reynolds witnessed the UFF gun attack on Sean Graham's bookies shop on Belfast's Ormeau Road in February 1992. She's taken a civil action against the British state but believes the controversial legacy legislation will deny her access to the courts.
Solicitors from KRW Law acting on behalf of the families said the legislation was the "most egregious breach" of international human rights.
The government is considering legal advice from the attorney general on the strength of a possible case to the European Court of Human Rights.
It would challenge the UK government's legacy bill on the basis that it does not comply with its human rights obligations as a signatory of the European Convention on Human Rights.