I am not sure if I would say KILLER, but I will share my approach on a new website. It is simple, natural and will get you results.
1) not link related but have a nice and not too thin of a site with the best onpage possible.
2) set up standard social profiles and link to moneysite
3) send out a press release from a quality service (think $50-$200 NOT $5) using brand name and url as anchors
4) get a couple highly relevant links (a real estate site should have something from realtor, zillow, relevant forum..... a home inspector should have a link from internachi or a home warranty company)
5) by now it has been 4 weeks+ and your site is now themed, buffered, relevant and now ready for page 1 by locating some quality links and ongoing small quantities of social signals.
6) everything before this is real simple....dont make the mistake of buying crappy one off links. Either build a high quality pbn and link with smarts using very limited exact and partial match anchors or locate a top tier link seller; they exist and are a very important piece if you are not doing your own network.